Question

a wire of length L and resistance R is stretched so that its length is?


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Answer 1

Answer:

Here, length is doubled and area of cross-section is halved. Thus, a wire of length l and area of cross-section A becomes a wire of length 2l and area of cross-section A/2

Explanation:

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Answer 2

Answer:

A wire of length L and resistance R is stretched so that its length is doubled and the area of cross-section is halved. A wire of length L and resistance R is stretched so that its length is doubled and the area of cross-section is halved .

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