Question

Two wires A and B are of equal length and have equal resistance . If resistivity of A is more than that of B which wire is thicker and why ?



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Answer 1

Answer:

If the materials are same, for constant length and resistance, area is directly proportional to resistivity. So more the resistivity, more the area of cross section (thickness). Therefore, A is thicker than B

Answer 2

Answer:

A is thicker

Explanation:

If the materials are same, for constant length and resistance, area is directly proportional to resistivity. So more the resistivity, more the area of cross section (thickness). Therefore, A is thicker than B.