Formulae of Class X Physics from Electricity and Magnetic Effects of Current

Sep 4 • Notes • 73400 Views • 108 Comments on Formulae of Class X Physics from Electricity and Magnetic Effects of Current

Clas X is the first phase for every student to face the burden of a national level competition. Here Oureducation.in is helping you to revise and keep notes of some important formulae, topics and chapters. The post describes some formulae of Class X physics from chapters Electricity and Magnetic Effects of Current, these being few of the most important chapters for boards.

 

CHAPTER- Electricity

Formula 1:
Coulomb’s Law
=(Q1*Q2)/(r*r)k  ;  where k= constant, Q1, Q2 are the charges on bodies 1 and 2.

Formula 2:
Conduction current ( I ) = dQ/dt ;   where Q= charge and t = time, dQ=charge on the body for very short interval of time dt

Formula 3:

Electricity and Magnetic Effects of Current

Electricity and Magnetic Effects of Current

Constant current ( I )  = Q/t  ;  where Q= charge and t= time

Formula 4:
Current density ( J ) = I/ A    ; where I= current and A= area in square meter

Formula 5:
Electric Power ( P ) = V/I  ;    where  V= voltage and I= current

Formula 6:
Conductance ( G ) = 1/ R ; where R = resistance of the body

Formula 7:
Ohm’s Law = V= IR ; where V= voltage, I = current and R= resistance of the body

Formula 8:
Series connection of resistors, Req =( R1+ R2 + R3 +….+ Rn) ; where R1, R2, R3 — Rn are the respective resistances of “n” number of bodies.

Formula 9:
Parallel connection of resistors, Req = (1/R1 + 1/R2 + 1/R3 +…+ 1/Rn) ; where R1, R2, R3 — Rn are the respective resistances of “n” number of bodies.

Formula 10:
Electric work done = U I t = UQ ; where U= potential energy , Q= charge, I = curent and t=time

Formula 11:
Thermal emission = j = AT*T exp(-Wa/kT)

Formula 12:
Force in electric field ( F) = E .Q ; where E= Electric Field and Q= Charge on body

Formula 13:
Voltage in plate capacitor = V= Ed ; where E= Electric Field and d= distance vector

Formula 14:
Energy of particle accelerated in an electric field ( E ) = QU

Formula 15:
Effective current in AC circuit = I = Ieff/ ( 2 ) ^1/2

Formula 16:
Effective voltage in AC circuit = V = Veff / (2 )^ 1/2

Formula 17:
Ohm’s law in a.c. circuit , V= IZ ; where I = current, V= voltage and Z= impedance

Formula 18:
Thomsons equation, w = (1/LC )^ (1/2) ; where L=inductance, W=Work Done and C = Capacitance.

 

 CHAPTER- Magnetic Effects of Current

Formula 1:
B (inversely proportional)  (I/r) ; where B= Strength of Magnetic Field, I=current passed through conductor and r=distance from conductor

Formula 2:
B=(µI/2πr) where B= Strength of Magnetic Field, r= distance from conductor, I=current passed through conductor and µ= permeability of medium

 

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108 Responses to Formulae of Class X Physics from Electricity and Magnetic Effects of Current

  1. Anirudha Tukaram Tambade says:

    I want to known all formulaes relayed to electricity of class x cbse

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