Question

2. A material B has twice the specific resistance of the material A. A circular.wire made of Bhas twice the diameter of the wire made of A. Then, for the two wires to have the same tesistance, the ratio La/La of their respective lengths must be (a) 1/2 (b)2 (c)1/4 (d)1​

Answer 1

Answer is (C) 1/2

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