Formulae of Class X Physics from Electricity and Magnetic Effects of Current
Last Updated: Sep 12, 2013
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
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
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10th class
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of electricity 10
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How to flow the electricity in the power generator.
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all reasoning type Question for lesson Magnetic effects of Electric current
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