Question

All formulae of electricity in 10th class

Answer 1

I = Q / t

Q = Charge

t = time taken

Amperes (A)

Voltage V V = E / Q

or

V = W / Q

E = Energy, W = Work done

Volts (V)

Resistance R  R = ρl / A

ρ = Resistivity,

l = length,

A = Area

Ohm (Ω)

Resistance R  R = V / I  ohm (Ω)

Power P  P = VI  Watts (W)

Conductivity σ  sigma = 1 /

Answer 2

The formulas used in class X are-

1- I,current=Q, charge/T,time

2- V,potential differnce=W,work done/Q,charge

3-V,potential difference=I,current*R,resistance

4-Resisitivity=(R,resistance*A,area)/L,length

5-H,heat=I2Rt

6-P,power=VI=I2r=V2/r

Some more important formulas-

1-F,force=Q,charge*E,electric field intensity

2-V=(K,constant of proportionality of columb's law*Q)/R,distance or radius

3-E=(KQ)/R2 4-F=KQ1Q2/R2 {{Columb's law}}

Note:- K=9*109 N/m