Question

Two wires A and B are made of the same material and have

the same length but different cross-sectional areas. If the resistance of wire A is 16 times the resistance of wire B, the ratio of the cross-sectional area of wire A to that of wire B is:

A 4 : 1

B 16 : 1

C 1 : 16

D 1 : 4

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Question

Two wires A and B are made of the same material and have

Solution

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