Question

6. Resistance of a given wire of length 'l' is 3ohm. The wire is stretched uniformly
such that its length becomes 2l. Find the new resistance of the stretched wire.
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Answer 1

Answer:

................................................................................................

Answer 2

Answer:

Explanation:

Since the R∝1/I

therefore, if I gets doubled R gets half

It is given that I get doubled i.e., it becomes 2I then the new R is, given R/2

so, the new R= given R/ 2

                      = 3/2

                      =1.5 Ω