JEE PHYSICS MCQ: CURRENT ELECTRICITY

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The masses of the wires of copper are in the ratio 1 : 2 : 3 and their lengths are in the ratio 3 : 2 : 1. The ratio of their electrical resistance

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Correct option: A

1.129178241

The correct answer is A (27:06:01). The ratio of electrical resistance is inversely proportional to the mass and directly proportional to the square of the length.

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