Question

how will the resistance of the conductor change if the area of cross section become double and becomes one fourth

Answer 1

Resistance will be twice if cross-section is halved

Answer 2

If area of cross section becomes double the resistance decreases by 2 times......as resistance and area of cross section is inversely proportional........

If area of cross section becomes one fourth then resistance increases by four times........as both are inversely proportional........

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