Question

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

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:

Wire b is thicker, because the thicker a wire is, the less resistence it has.

Explanation: