GB/T 2900.1-1992 Electrical terminology. Basic terms
Some standard content:
un 621. 3 : 001. 4
National Standard of the People's Republic of China
GB.T 2900.1.92
1992-06-19
Electrotechnical terminologyFundamental terms
1993-03-01 implementation
State Administration of Technical Supervision
Topic content and recent usage
Basic concepts
Secondary school, general science, magnetoelectricity
Circuits and magnetic circuits
.......
Electrical and electrical equipment
Electrical safety
Electrical diagram
Chinese secret introduction
National Standard of the People's Republic of China
Electrrutechnical terminulugyFundamental terms
CB/T 2900.1- 92
Content GK 29u(. 1—8
This standard is for use with Class II medical publications (C publications 53(1011 mathematics 5C(111 chemistry 51121 electromagnetism 3.53131 circuits and magnetic circuits.53.151 electromagnetic devices 3 and 52901 fuel science. 1 Main content and applicable scope
This standard specifies the technical specifications for use in electrical engineering. This standard is intended for use in the preparation of standards, binding of technical documents, abbreviations and translations of professional manuals, publications, 2 Basic concepts
2.1 Geometric concepts
2.1.1, scalar quar.tity
a quantity that can be represented by a real number or a random number in a given unit. 2.1.2 quaternary
a quantity that can be represented by a scalar quantity in a given order in a space. 2. .3 fild
a physical quantity that exists at a certain point in a region, or refers to the region where it is distributed. 2.1-4 celestial field fild
a field whose state at each point can be represented by a graph. 2.1.5 urifarmield
a field whose magnitude and direction can be the same at all points in a space. 2. 1. 6 alternating field alternating field a field with a certain direction and intensity that is alternating. 2:7 transition field ield
Yes! A single reference system is constant. 2.i The flux through the surface of a real disk is the surface integral of the product of the amount of the tip and the unemployment surface element. 2.1.9 The conserved flux conervtieflx
In the same book, the confined energy will be directed to the same direction. 2.1.10 The line lneaf foc
moves at all its points with the corresponding amount of direction to help draw the editor. 2. *. 11
tubeof force
Guohao Technical Supervision Bureau 1997-6-19 approved
1993 3 01 implementation
GB/T:2900.1-.92
with a separate due to all the lines of force that are contained in the required part of the space, text terms: lines of force
2.7.12uril tube
with a unit flux also through the node.
2. 1. 13 sensitive: years and more)rivi-Tg+-(r:fe:leur inl:from a closed surface of the flux divided by the volume of the closed bread and the quotient, when the rest of the product has no change in the limit of the time,
2.1.14 pregnancy rgrm [l
The whole is zero.
It can be defined as: line rise solcnoeal fcld
2. 1. 15 Circular sedimentation ir:mlin:
: The music or practice and division of a closed path. Jaru
2.1. The product of the volume of the spiral element and the six-dimensional field on a reading surface is the quotient divided by the volume of the closed surface, when the volume has a size that falls within the limit of the hour. i.aa
cur7-- V.7-1.m
2.1.17 No travel new r:otational leld Chu Jin is the required loss field.
2.1.18 Flux density field curl fie.nl
A mass field whose magnitude is not zero at all points, 2. 1-:9
The gradient of a scalar field whose magnitude is equal to the number of words in the field on the law groove, and whose direction is a cylinder of the constant path of the vertical dry field with increasing field value, of
grad/=v/-
2-1.20 (standard> (lost and) Llar) panmlialnavecrnrfield) whose gradient is the negative value of the scalar field of the indicated sky field. Synonyms: (standard) potential
lost (lost field) veciermilentinl (afveetnried) 2.1.21
whose degree is an intersection of the indicated east field. Synonyms: tt||2 Equipotential line, surface or surface potential line surface2
GB/T 2900.1—92
On which the points are equal, the line, the variability: 2.2 Concepts related to periodic phenomena
2.2.1 Periodicity srDers
The periodic energy value contains the smallest difference between two values when they are equal. 2.2.2 Period Deriodieguant: t
The periodic quantity whose value is not zero in a period of time is equal to zero. 2.2.3 Pulsatinpquantity
In a period of time, the periodic quantity whose value is not zero is a variable that changes
in the same period of time. 2.2-5 oscillatingquantity
alternately increases and decreases with the filter.
is called the sinmctricalalternatingquartity value, which is the value of the alternating quart every half a cycle, and the signal is opposite to the alternating quart. 2.2.7 A positive quantity airusorl uunin
is a quantity that varies according to the positive number of the independent variable, 2.2.8 A positive decsnodalentcs
is a quantity that varies according to the product of a positive function and an approximate function whose value decreases with the increase of the variable in the environment, 2.2-9
is equal to the tangent angle of the lower sine, and its modulus is equal to the mean square root of the sine or the oscillating effect A
2- V?A+cas.or +p: = A+cos(ar +e)2.2.~0 deduction::
is the radian (r) of Acosr+)Asint: is the initial state.
cycle
is the total state or value of a phenomenon or a group of quantities in a certain repeated order. Same as: 2.2.12 frequency
the frequency band
the frequency pool pressure in a specific space,
the product of the frequency anarcqncy
the positive frequency and 2
2. 2. 15 stop frequency cul off frururmcy the efficiency of the passband or stopband to achieve a specified value, 2.2. fundamental (fundamental)
the component in which the transmission efficiency is equal to 1, harmonic (comporeut) 2.2.17
the component in which the frequency efficiency is greater than "". 2.2.18
Time value inetantaaousvale
The value of a time variable at a certain time:
2.2.19meanva.uc
GB/T2900.1—92
The strict mean value of the most instantaneous values within a specified time period. For the same period, the time period must be one cycle. 2.2.20
J report caal-ean-sujuarevalucit.msvalug In the specified time period, the square root of the average annual value of the square of each address is called a fixed period.
l must be the same as: effective value peak value
is the maximum value of a variable in the specified time period. For periodic quantities, two periods are a period. 2. 2. 22 The total amplitude of a period quantity: ut,] arpli-me of uscillainr: uf a pericntr uznti1 a quantity produces a maximum value and a minimum value in the same period, but if it is a period of two strings, it is often called a double degree after obtaining a meow\! 22.23 The amplitude olymmericnalier aztinguaatity is calculated to be half of the total value.
The ratio of the effective value of a symmetrical waveform to the average value within the period (starting from zero), 2.2.25
The harmonic content
The quantity obtained by removing the fundamental wave from the alternating disk, 2.2-26
The phase difference between two sine waves in a given group. 2.2-27 A sine wave is a frequency wave that is in the same frequency range as the frequency of the other wave. 2-2.28 A sine wave is a frequency wave that is in the same frequency range as the frequency of the other wave. 2.2-29 A sine wave is a frequency wave that is in the same frequency range as the frequency of the other wave. 2.2-28 A sine wave is a frequency wave that is in the same frequency range as the frequency of the other wave. 2.2-29 A sine wave is a frequency wave that is in the same frequency range as the frequency of the other wave. 2.2.31:
synchronous
synchronousness
the existence of two systems which are capable of being separated and resolved. 2.2.32
f-syncarerism
the state of two or more devices having the same frequency, wherein the electromotive force of two synchronous machines having frequency dissonance is synchronized and phased. nillation
the physical property characterized by one or more damping quantities. dampeduscillation
the reduction of the value of a vibration to zero,
2.2.36 the damping produced entirely by energy stored in the system beforehand. 2.2.37 forced vibration caused by external influence
to the text, according to the English
2-2.38 relaxation report irlxaLicnnarill.anir:nGB/T 2900.1-92
the disassembly of the unit,
embedded main system holding unit nature out of the line slowly simulated device, well fast reverse fast selection 2. 2. 39
North Thailand e
strong side vibration two periodic non-book close to the door by the pregnancy period of separation of the system cattle present both phenomenon: synonymous, according to
2-2-4C non-periodic phenomenon rinliahenunn no board separation, close to the stable inspection of the present more. 2-2-41 non-periodic circuit aperiodir cireat does not produce blue free vibration end that is, circuit.
2.3 Concepts of waves
2.3.1() Wave (travel'ing) Wave
is caused by the physical changes of the medium in which it propagates. 2.3.2 Plane wave
is a wave that travels in any direction of direct propagation. 2.3.3 Precursor wave
is a wave that travels freely in the medium.
Plane wave
is a plane wave that travels in a direction of direct propagation. 2.3.6 Longitudinal wave
is the energy represented by the mass of a wave propagating from a parallel plane to the ground. 2.3.7 Transverse wave
is the energy represented by the mass of a wave propagating from a parallel plane to the ground. 2.3.8 Wavelength wav-lgih
is the distance between two successive points on the same plane in the direction of propagation. 2.3.9
is the part of the wave observed in the direction of propagation. 2.3.10 Wavelength Transmission Frequency Wavelength The wave velocity (af wavr) is the quotient of the distance travelled by a wave in a given time interval divided by the interval. 2.3.12 Wave number The reciprocal of the wavelength, synonym: rate of return 2.3.3 Phase velocity Phase elority The quotient of the frequency divided by the wave number. The derivative of velocity with respect to wave number: energy efficiency arsiniasinnGB/T2900.1
The density of the unit within a single core,
2.3.16 Dispersion material d:saersive mecsum The product in which the phase velocity changes with frequency: 2.37 bet
The difference between the frequencies of two frequencies with very small difference, synonyms: beat
2.3.18 searfregucacy
The difference between the frequencies of two frequencies without difference.
The total it energy density-yotthetolalelecrroraegneticencrgy individual loss of the same nuclear energy pulse contained in the quotient of the product of the item, 2. 3.20
Energy or mining material experience
There is alarizedraditor
The transmission of some asymmetric conditions [for example: plane polarization, protection of the country's deflection, etc.], 2. 3. 22
hyperactivity
the constant decrease of the quantity of the non-transmitting phenomenon in the space is li.inpiag
the constant decrease of some phenomena with time, 2.3.24
critical damping crltuealianpirg
corresponding to the limit condition between the vibration and the non-periodic state, 2.3.25
logarithm lapari-nmideeremen
the natural logarithm of the ratio of the amplitudes of two sweep chains with the same sign, 2. 3- 26
coefficient of system tiamrungcoefficicn
double reduction divided by the time limit index of the two sweep chains with the same sign between the large values tmccoagtntofcxponertialquuntiy2. 3.27
The time required for the quantity to reach its limit if the initial rate of change is maintained. 2.3.28 Transmission constant: The complex number representing the voltage or current per unit length when the voltage or current is transmitted along a normal line assumed to be uniform and natural.
2.3.29 Displacement
The change in the speed or cycle of the object during the transmission process. 2.2 Concepts of symmetrical components and symmetrical standards 2.L.1 Symmetrical standards for unbalanced multi-panel systemsunbalancedpolyphasefuartities
An unbalanced polyphase system is divided into multiple narrow symmetric systems, 2.42 Symmetric system division disk compcneatofsymmet:icalsyarem An obvious symmetric polyphase system.
2..3 Positive sequence polyphaze system A polyphase system in which the quantity labeled (11) has a phase relationship with the quantity labeled as 10 2.4.4 Negative sequence polyphasic system A polyphase system in which the quantity labeled (1) has a phase relationship with the quantity labeled as 1 2.4.5 m-order positive sequence polyphasic system positivesequcneepnlyphasesystemofo:dermtB/T 2900. 1— 92
It has a cabinet succession number, which is called a positive high-precision system separated by an angle, 2.4.6 m-order positive sequence polyphasic systemolu-derm It has a phase relationship with the quantity labeled as 10, which is called a negative system with a distance ratio T, 7.4.7 positive sequence cu-ordinaie ol syrsem cf three aasc nuenities angle band! ten with subscript 1 and symmetry dust called. 24
with subscript 2 components, in the relationship between the two phases with 2.4. B two-phase library negative sequence tu-creinaia of a zys'ers oi taret plhaac quanies of the index of the research before} with subscript 1 the most opposite dust mark. The components with subscript 2 are 2.4. 9
T sequence measure positiveseguenrctomruaealaof systemtenoithrecphaseguantitins correct the sequence coordinates of the system.
2. 4. 10 Three-sweep negative sequence divide 1eg,*r Amjuuurs an.pnnents u( n 4ynl+m af ihre nlasr quami: es group receives the negative sequence coordinates of the system. 2.4.i1 Zero coordinate of a multiphase system is called zero sequence or hnmepalar couredinate oisysium of 2.4.12 Zero.cguracecomponentmopolarcomponcut is a quantity that makes up the zero sequence coordinate.
The unbalance of a phase system is the ratio of the effective load of the negative sequence or zero sequence to the effective load of the positive sequence. Synonyms: The asymmetry of a three-phase system 2. 4. 14
The phase sequence impedance (of a multi-phase symmetrical winding) is the impedance of the winding (polyphase) when the phases pass through the valley current of a multi-phase current system, the difference in potential at the end of one phase is divided by the reverse current passing through it.
2.2.15 The phase sequence conduction (of a multi-phase system) is the cyclic impedance of the phase sequence (polyphase symmetrical winding) divided by the reverse current passing through it. wiadirug the inverse of phase sequence impedance.
Phase sequence impedance (multi-phase symmetrical winding) cyelicrcatancecfpolyphasesymmetrialwinding) corresponds to the disturbance of the sequence impedance,
Positive power of two-phase system kirilive sejuerrr prwer in i ili-ee-phast yilnrr: per phase: the power formed by the positive sequence component of the voltage and the positive sequence component of the corresponding current. b.
One-phase system; three times the positive sequence power of each phase. Negative power of three-phase system negativesegueeurnhre-aasryste2.4.18
per phase: the power formed by the negative sequence component of the voltage and the corresponding negative sequence component of the current. 2.4.19
The power generated by the zero-sequence component of each phase of a two-phase system. b.
2.4.20The sum of the fluctuating powers of each phase of a three-phase system.
3Electricity, magnetism, and electromagnetism
3.1Electricity
3.1.1Electromagnetism
A manifestation of energy associated with static charge or dynamic charge. 3.1.2Electrification
A specialized discipline that studies electrical phenomena.
33 ecic
CB/T: 290C.1- 92
Contains special electrical products, products produced by electrical products, such as electric energy, electric lights, motors, etc. 3.1.4 ecrust1,r%
Study on the subject of the phenomenon of abandonment of the market and the society 3.1.5 Electricity (Qcletr cherc
A synonym for charge in a material or system, and a synonym for electric quantity. 3..6
charge densityvelumcelectricctargdensilyThe ratio of the charge contained in a volume element to the specific surface area, when the size of this area approaches zero3.1.7
surface chargeisacctclccchgidcnsi
The ratio of the charge contained in a surface area to the specific surface area, when the size of this surface approaches zero:3.1.8electricity required to expandJincariclerric>ehargcdensisyThe length of the object passing through a length element and the specific surface area of this length element, when the size of this length approaches zero3.1.9electricity carrier
a 3.11D Electrocution Electrocution occurs when a conductor is brought close to another conductor. Electrostatic discharge occurs when a conductor is brought close to another conductor. b. The phenomenon of causing electrical separation on an object under the influence of electricity. 3-1.12 The charge on a conductor is the difference between the total amount of charge on a conductor and the total amount of charge on a conductor. 3.113 Coulomblaw (rcactrcty) In a uniform, isotropic medium with a very large distance between them, the force between two electrodes concentrated at two points is proportional to the product of the two charges and to the square of the distance between them. 3.1.14 Electromagnetic field is a small area of space that has the potential to generate a force. 3.1,15 electrostatic potential is the value of the electric field with a negative sign and the direction of the electric field. 3.1.16 static pressure is the product of the force of the electric field on the surface of the object. 3.1.17 dielectric polarization is the relative position of the positive and negative electric centers in the dielectric under the action of the electric field, so that the dielectric surface is charged. 3.1.18 electrostatic density is the vector of the electric field density of the object. Note: in the real world, the electric field density at all points is equal to the average strength of the electric field. E
synonym, splercmen:
3-1.19 Electric flux (direct r\r:I:ic [lux) is a suitable mark for electric flux density: B
3.1. Electric flux cot
CH/F 2300.1S2
gives the formula -=1.
is the speed of light in space, in the original pressure unit system (1): the value of the range: E
23F/g-8. 85 pF/m
In meaning: vacuum absolute permittivity (typical hollow constant absnlulepemittivitycEvwmum3. 1.2
(absolute) permeability (absoluie>permjitisiny) is a standard wind or matrix quantity that measures the ratio of the electric flux to the electric intensity. For isotropic materials, the capacitance is the initial quantity: for anisotropic materials, the capacitance is the initial quantity: for anisotropic materials, the capacitance is the initial quantity. 3. 1. 22
Electropermeability elaiFeiv1
Absolute heart rate of matter and electric saving effect.
Material electric band d:eleririchysteresis
The intensity of the material is not determined by the position! The field driving of the specified reading time determines the intensity of each of the previous ten senses. 3-1.24Material viscosity ielerirvisccasiny medium negative most Anbei band to produce more than the set of electric field, the degree of positive band is secret 3-1.25 Conductor wear (in the presence of other conductors) capae: tar.ceat = conductor self-charge divided by its charge: assuming that the conductor has a standard charge as the rate of change, 3..26 piezo-electricity
due to a small change in the test pressure of the machine caused by some physical changes, 3 1.27
Thermoelectricity
The phenomenon of certain objects being affected by temperature. 3. 1.28 Kinetics
The study of various phenomena of electricity in motion, excluding magnetic phenomena. 2.1.29 Electromotive forceeleetrometive forcefcrceie.mfThe voltage of an active element, the ideal voltage. 3.1.30
Contact electromotive forceelectromotive force3.1.31
The electromotive force that opposes the flow of electric current. 3-1. 32
Voltage drop valtaRedrnp
The reduction of potential in an electrical device with current flowing through it. Synonyms: Potential drop potentieldrop
Voltage ulg
The voltage of an ideal voltage source,
Power source current sucuent
The current flowing through an ideal source.
3.1.35 Electric current eleetzie cu:rral
The movement of electric charge in a medium, the current we use is related to the direction of movement. h. 3.1.36 Electric density curren:dcrsity
The integral of which over a given surface is equal to the vector of the current through this surface. In a straight conductor, the average current density is equal to the current in it divided by the area of the conductor. 3.1. Total current
A term given by the total current density through a surface. 3.1.38 Conductive charge
The electric charge generated by the directional motion of electrons or ions in a conducting medium. 3.1.39 Core electric charge
The source of electric charge caused by the movement of charges in a substance in an insulating medium, commonly known as dynamic current
..40 Electrode current
The current caused by the change in the dielectric strength. 3.141
Electron currentectoncen
Electricity generated by the movement of self-electrons. 3. 1. 42 CurrentInnie currer.tElectricity generated by the movement of two electrons
3.1.43 The current in a one-way batterynidiretiuusrrr1water far guarantee special current in the same branch:
3.1.44ddy turrem
When a conductor is placed in a short-circuit or in a short-circuit, the self-closing net blood flow generated in the conductor,
3. 1. 45 Current d:splacement currenThe rate of change of the ... .46 Ohm's law: In the case of a point flow, this law means that the current in a network is proportional to the electromotive force, or when there is no electromotive force in the element, the current in it is proportional to the potential at its ends. Kirchhur's law of electrical network: rlwork3.1.47 First law: The algebraic sum of the currents to any node in the network is equal to zero. Second law: In any closed circuit, the algebraic sum of the products of the resistance and the resistance in each element is equal to the algebraic sum of the electromotive force at that node.
These two laws apply to the solution of the current potential. The phase difference is always expressed as "phase sum" and "algebraic sum". This can also be expressed as "phase difference" and "electricity". 3.1.43 Conductivity (eual:tarivc) The property of some substances that can conduct electric current. 3.1-49 Asymmetric conductivity cnnductivit to some substances and have the property of conducting electric current more in the direction of conduction than in the direction of sight. 3.1.50 Joule's law
The power produced in a uniform conductor in the form of heat is proportional to the resistance of the conductor and the amount of heat dissipated by the electric current.
Yellow effect law
Valiaffezr
shows the effect of two bodies of the same temperature being connected and producing an electromotive force. 3.1.52 Laplacslaw's law gives the force produced by a current element placed in an electric field. 3.1.53 Biotsar's law Riat and Savart's law gives the electric field produced by a current element at a point. 1030
electromotive force contactiplromntiveforce The electromotive force generated by the contact of two objects of different physical states or different chemical compositions. 辰毛动力 hackelectromotiveforce3.1.31
The electromotive force that opposes the flow of electric current. 3-1. 32
Voltage drop valtaRedrnp
The reduction of electric potential in an electrical device with electric current flowing through it. Synonyms: potential drop potentieldrop
TV voltage ulg
The voltage of an ideal voltage source,
power source current sucuent
The current flowing through an ideal source.
3.1.35 electric current eleetzie cu:rral
, the movement of electric charge in a medium, the current we use is related to the direction of motion. h. 3.1.36 Electric density curren:dcrsity
The integral of which over a given surface is equal to the vector of the current through this surface. In a straight conductor, the average current density is equal to the current in it divided by the area of the conductor. 3.1. Total current
A term given by the total current density through a surface. 3.1.38 Conductive charge
The electric charge generated by the directional motion of electrons or ions in a conducting medium. 3.1.39 Core electric charge
The source of electric charge caused by the movement of charges in a substance in an insulating medium, commonly known as dynamic current
..40 Electrode current
The current caused by the change in the dielectric strength. 3.141
Electron currentectoncen
Electricity generated by the movement of self-electrons. 3. 1. 42 CurrentInnie currer.tElectricity generated by the movement of two electrons
3.1.43 The current in a one-way batterynidiretiuusrrr1water far guarantee special current in the same branch:
3.1.44ddy turrem
When a conductor is placed in a short-circuit or in a short-circuit, the self-closing net blood flow generated in the conductor,
3. 1. 45 Current d:splacement currenThe rate of change of the ... .46 Ohm's law: In the case of a point flow, this law means that the current in a network is proportional to the electromotive force, or when there is no electromotive force in the element, the current in it is proportional to the potential at its ends. Kirchhur's law of electrical network: rlwork3.1.47 First law: The algebraic sum of the currents to any node in the network is equal to zero. Second law: In any closed circuit, the algebraic sum of the products of the resistance and the resistance in each element is equal to the algebraic sum of the electromotive force at that node.
These two laws apply to the solution of the current potential. The phase difference is always expressed as "phase sum" and "algebraic sum". This can also be expressed as "phase difference" and "electricity". 3.1.43 Conductivity (eual:tarivc) The property of some substances that can conduct electric current. 3.1-49 Asymmetric conductivity cnnductivit to some substances and have the property of conducting electric current more in the direction of conduction than in the direction of sight. 3.1.50 Joule's law
The power produced in a uniform conductor in the form of heat is proportional to the resistance of the conductor and the amount of heat dissipated by the electric current.
Yellow effect law
Valiaffezr
shows the effect of two bodies of the same temperature being connected and producing an electromotive force. 3.1.52 Laplacslaw's law gives the force produced by a current element placed in an electric field. 3.1.53 Biotsar's law Riat and Savart's law gives the electric field produced by a current element at a point. 1030
electromotive force contactiplromntiveforce The electromotive force generated by the contact of two objects of different physical states or different chemical compositions. 辰毛动力 hackelectromotiveforce3.1.31
The electromotive force that opposes the flow of electric current. 3-1. 32
Voltage drop valtaRedrnp
The reduction of electric potential in an electrical device with electric current flowing through it. Synonyms: potential drop potentieldrop
TV voltage ulg
The voltage of an ideal voltage source,
power source current sucuent
The current flowing through an ideal source.
3.1.35 electric current eleetzie cu:rralwww.bzxz.net
, the movement of electric charge in a medium, the current we use is related to the direction of motion. h. 3.1.36 Electric density curren:dcrsity
The integral of which over a given surface is equal to the vector of the current through this surface. In a straight conductor, the average current density is equal to the current in it divided by the area of the conductor. 3.1. Total current
A term given by the total current density through a surface. 3.1.38 Conductive charge
The electric charge generated by the directional motion of electrons or ions in a conducting medium. 3.1.39 Core electric charge
The source of electric charge caused by the movement of charges in a substance in an insulating medium, commonly known as dynamic current
..40 Electrode current
The current caused by the change in the dielectric strength. 3.141
Electron currentectoncen
Electricity generated by the movement of self-electrons. 3. 1. 42 CurrentInnie currer.tElectricity generated by the movement of two electrons
3.1.43 The current in a one-way batterynidiretiuusrrr1water far guarantee special current in the same branch:
3.1.44ddy turrem
When a conductor is placed in a short-circuit or in a short-circuit, the self-closing net blood flow generated in the conductor,
3. 1. 45 Current d:splacement currenThe rate of change of the ... .46 Ohm's law: In the case of a point flow, this law means that the current in a network is proportional to the electromotive force, or when there is no electromotive force in the element, the current in it is proportional to the potential at its ends. Kirchhur's law of electrical network: rlwork3.1.47 First law: The algebraic sum of the currents to any node in the network is equal to zero. Second law: In any closed circuit, the algebraic sum of the products of the resistance and the resistance in each element is equal to the algebraic sum of the electromotive force at that node.
These two laws apply to the solution of the current potential. The phase difference is always expressed as "phase sum" and "algebraic sum". This can also be expressed as "phase difference" and "electricity". 3.1.43 Conductivity (eual:tarivc) The property of some substances that can conduct electric current. 3.1-49 Asymmetric conductivity cnnductivit to some substances and have the property of conducting electric current more in the direction of conduction than in the direction of sight. 3.1.50 Joule's law
The power produced in a uniform conductor in the form of heat is proportional to the resistance of the conductor and the amount of heat dissipated by the electric current.
Yellow effect law
Valiaffezr
shows the effect of two bodies of the same temperature being connected and producing an electromotive force. 3.1.52 Laplacslaw's law gives the force produced by a current element placed in an electric field. 3.1.53 Biotsar's law Riat and Savart's law gives the electric field produced by a current element at a point. 10
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