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Which of the following terms does not represent electrical power in a circuit?
- (a)\( I^2R \)
- (b) \( IR^2 \)
- (c)VI
- (d) \(V^2 \)/R
Answer :
(b)\( IR^2 \)
Power of an appliance determines the rate at which electrical energy is delivered to it.
Electrical power is given by the expression, P = VI … (i)
According to Ohm's law, V = IR … (ii)
where,
V = Potential difference
I = Current
R = Resistance
So, it can be written that
