I-V characterstic of a copper wire of le...

`I-V` characterstic of a copper wire of length `L` and area fo cross-section `A` is shown in Fig. The slope of the curve becomes

A

More if the experiment is performed at higher temperature

B

More if a wire of stell of same dimension is used

C

More if the length of the wire is increased

D

Less if the length of the wire is increased

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The correct Answer is:

D

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