Question

A given wire of resistance 1
is stretched to double
its length. What will be its new resistance ?​

Answer 1

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if the length of wire is doubled the resistance should also get doubled..........

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Answer 2

Answer:

Resistance is directly proportional to length

Explanation:

R=rl/A where r is specific resistance.

so R is directly proportional to length

R1/R2 = L1/L2

R1/R2=L/2L

R/1R2=1/2

R2=2R1