Write an expression for the electrical power spent in flow of current through a conductor in terms of (a) resistance and potential difference, (b) current and resistance.

(a) Expression for electrical power spent in flow of current through a conductor in terms of resistance and potential difference is —

$W = \dfrac{V^2}{R}$

(b) Expression for electrical power spent in flow of current through a conductor in terms of current and resistance is —

$W = I^2R$