Question

a copper wire of resistance r is pulled so that its length is doublled find the new resistance of the wire in terms of original resistance

Answer 1

when length of wire is L resistance is r.
L is directly proportional to r.
when L=2L then resistance r=2r.

Answer 2

Héy buddy..

So, Thé answer is --) This wire is pulled so that its length is doubled (temperature remains constant ) . Find the new resistance of the wire in terms of its original resistance . We have a copper wire of resistance R . This wire is pulled so that its length is doubled (temperature remains constant ) . .

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