Question

How is the resistance of the wire affected if its length is doubled ? 1 point becomes less becomes equal becomes more none of these

Answer 1

Answer:

R' = R(L2/L1)^2

Explanation:

L2 is changed lenght

L2 = 2L1

so its clearly visible

R' ∝L2 (or changed lenght)

R' = R(4)