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Electric Power

Electrical po...

Question

Electrical power P is given by the expression $P = (Q \times V) \div t i m e .$
(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.

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Solution

(a) Q represents charge and V represent voltage.

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

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