Question

The ends of a wire are connected to the terminals of a battery. For which of the following changes will the resulting current in the circuit have the largest value? a) Replace the wire with one that has a larger resistivity. b) Replace the wire with one that has a larger radius. c) Replace the wire with one that has a longer length.

Answer 1

Only (b) is correct

A larger resistivity will result in a larger resistance and a longer wire will also result in a larger resistance.