Electrical power P is given by the expression P = $\dfrac{(Q × V)}{\text{time}}$.

(a) What do the symbols Q and V represent?

(b) Express the power P in terms of current and resistance explaining the meaning of symbols used there in.

(a) In the expression,

$P = \dfrac{Q \times V}{time}$

Symbol Q represents charge and the symbol V represents voltage.

(b) The expression for power P in terms of current and resistance is:

$P = I^2R$

where,

I represents current and

R represents resistance.