Question

Define electric power and electric devices resistance R is connected across a source of voltage v and draws a current I drive an expression for power in terms of current and resistance

Answer 1

Electric power is the rate of supply of electricity (electrical energy) to any conductor or a circuit by that source of electricity.

The rate at which the work is being done in an electrical circuit can also be called as electric power.

Electric power = Work done by a source (W) /Time taken to perform that work(T)

P = W/t

Or, P = VIt/t

Or, P = VI

Or, P = V²/R

Or, P = (IR)²/R

Or, P = I²R