Question

a heating appliance has resistance 150ohm if 2A current flows through it what is the power of the appliance?

Answer 1

R = 12 ohm

i = 2A

Power (P) = V×i= (iR)×i= i^2×R

Thus,

=> Power (P) = i^2R

= (2)^2 ×150

= 4 ×150

= 600 W

Hence, power of the given heating appliance is 600W.

Answer 2

Use this picture it will help you