Question

please give me all the formulas which are in the chapter electricity (class 10 physics) and explain some points about it.

Answer 1

1) Q = n*e
2)V =W/Q
3)I=Q/T
4)V=IR
5)Rnet=R1+R2+R3.... (SERIES CONNECTION)
6)1/Rnet=1/R1+1/R2...(PARALLEL CONNECTION)
7) R=rho*l/A
8) H = I^2Rt

Answer 2

Here is ur answer,
(i) Potential difference : work done / charge moved
V = W/Q
SI unit of potential difference is volt
(ii) Current : quality of charge moved/ time taken
I = Q /T
SI unit of current is ampere, Current is measured by the instrument ammeter .
(iii) Resistance : potential difference/current
R = V/I
SI unit of resistance is ohm
(iv)Resistivity = Resistance × Area of cross section / lenght
p = R× A /L
SI unit is ohm metre
(v) Electric power : work done/time taken
P= W/ T
SI unit is watt
(vi) Electric energy : power× time
E = p×t
SI unit is joule .

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