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Question

A piece of wire of resistance R is cut into five equal parts, keeping same cross section area what will be the new resistance of each resistor.

A
R5
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B
5R
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C
R
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D
R2
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Solution

The correct option is A R5
We know that resistance of any resistor is directly proportional to the length of it, So, therefore, each resistor will become R5.

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