KCET 2020 Physics Solved Paper

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Question : 57 of 60

Marks: +1, -0

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

Less if the length of the wire is increased.
More if experiment is performed at higher temperature.
More if a wire of steel of same dimension is used.
Less if the area of the wire is increased.

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