Question

i need all the formulas of the chapter electricity of class 10.fast please..

Answer 1

v=ir
p=i2r
p= v2/r*
r= rho*length/area
heat = p*t
p= i*v
r(series)= r1+r2+r3...
r (parallel)= 1/R= 1/r1+1/r2+1/r3.......

Answer 2

V = potential 
R = resistance
I= current 
P= power
H = heat
T = time

V= IR

P = VI = I²R = V²/R

H = I²RT

R = ρ$\frac{le}{A}$

ρ = resitivity 
le = length of wire

A = area of cross-section

for series connection  
R = R₁ + R₂ ....... n resistors

for parallel connection 

R = $\frac{1}{R_1} + \frac{1}{R_2}$ ......n resistors