Question

Electrical power P is given by the expression $P=(Q\times V)÷time.$
(a) What do th symbols Q and V represent?
(b) Expresss the power P in terms of current and resistance explaining the meaning of symbols used there in.

Answer 1

(a) Q represents charge and V represent voltage.

(b) Electrical power, $P=I^{2}R$
where I is current and R is resistance.