Question

a length of a cylinderical conducting wire is doubled and area of cross section is half , then resistance of the wire becomes
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Answer 1

Answer:

Hence Resistance will become 4 times in the new condition, if the area is doubled and length is halved.

Step-by-step explanation:

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Answer 2

question

a length of a cylinderical conducting wire is doubled and area of cross section is half , then resistance of the wire become

solution

R′=ρA2L. So, R = 2R'. Hence, If the length of a wire is doubled, then its resistance becomes 2 times

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