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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wht is the current rting of fuse wire in domestic circuit ?
wht is the current rting of fuse wire in domestic circuit ?
wht is the current rting of fuse wire in domestic circuit ?
wht is the current rting of fuse wire in domestic circuit ?
wht is the current rting of fuse wire in domestic circuit ?
wht is the current rting of fuse wire in domestic circuit ?
wht is the current rting of fuse wire in domestic circuit ?
wht is the current rting of fuse wire in domestic circuit ?
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when running 2kw iron for 30 minute it uses……. electrcity????
when running 2kw iron for 30 minute it uses……. electrcity????
when running 2kw iron for 30 minute it uses……. electrcity????
10
Formula of physics with problems.
how can i get some more questions on elec tricity and magnetic field of electric current
how can i get some more questions on elec tricity and magnetic field of electric current
how can i get some more questions on elec tricity and magnetic field of electric current
how can i get some more questions on elec tricity and magnetic field of electric current