The power of an electric appliance is denoted by which of the following?

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$I V$

$V^{2} R$

$I R^{2}$

$I^{2} V$

answer is B.

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Detailed Solution

Resistance is a property of electrically charged objects and materials that inhibits electricity from flowing through them.

It is denoted by R. The SI unit of resistance is the ohm $(Ω)$ .

Power is the rate at which an electric current work. P is an abbreviation for it. The watt is the SI power unit (W).

We know that: Power $P = V I = \frac{V^{2}}{R} = I^{2} R$

Here I is the current flowing and V is the potential difference across resistance, and R represents resistance.

An electric device draws its power from:

Power $P = V I = I V$

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