Explain the following:How does the resistance of a wire vary with its area of cross-section?

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : The resistance of a wire varies inversely as its area of cross-section. Reason : The resistance of a wire varies inversely as its radius.

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The specific resistance of a conductor increases with Increase in cross-sectional area..

A cylindrical conductor of length l and uniform are of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.

A cylindrical conductor of length l and uniform are of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.

A piece of wire having resistance R is cut into five equal parts. How does the resistance of each part of the wire compare with the original resistance?

A piece of wire having resistance R is cut into four parts. How does the resistance of each part compare with the original resistance?