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JEE Main 2025 (4 Apr, Shift 2) · Electrical Power & Heating Effect

Electrical Power & Heating Effect question from JEE Main 2025 (4 Apr, Shift 2)

Q8JEE Main 2025 · 4 APR · SHIFT 2Medium

Electrical Power & Heating Effect

There are ' $n$ ' number of identical electric bulbs, each is designed to draw a power $p$ independently from the mains supply. They are now joined in series across the mains supply. The total power drawn by the combination is:

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Answer: (d)

Each bulb: $R = V^2/p$ .
In series: $R_{total} = nR$ , so $P = \dfrac{V^2}{nR} = \dfrac{p}{n}$ .
So the answer is (d) $\dfrac{p}{n}$ .

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