Home Physics Current Electricity Mix I-V characteristic of a copper wire of lengt…
Physics Current Electricity Mix MCQ (Single Correct)

I-V characteristic of a copper wire of length L and area of cross-section A is shown in figure. The slope of the curve becomes

A
More if the experiment is performed at higher temperature
B
More if a wire of steel 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

Hence the slope becomes less if the length of the wire is increased.

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