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When the potential difference of 8V is applied across a lamp, a current of 4A flows through the lamp. What must be power consumed by the lamp?

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32 W

6 W

10 W

14 W

answer is A.

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Detailed Solution

The pace at which electrical energy is utilized is referred to as power.

The SI unit of power is the watt (W) or joule per second $(J / s)$ .

The power absorbed by a load in a circuit with current I and voltage V applied across it is given by: $P = V I$

Given that:

Voltage, $V = 8 V$

Current, $I = 4 A$

Power $= V I = 8 \times 4 = 32 W$ .

Therefore, 32 W is the correct answer.

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