Define electric power. Give its $SI$ unit.
(N/A) Electric power is defined as the rate at which electrical energy is consumed or dissipated in an electric circuit. Mathematically,it is the rate of doing work,given by $P = \frac{W}{t} = VI = I^2R = \frac{V^2}{R}$. The $SI$ unit of electric power is the watt $(W)$,which is equivalent to $1 \text{ joule per second} (J/s).$
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