Question

The resistivity of a wire ______

Options

• increases with the length of the wire.

• decreases with the area of cross-section.

• decreases with the length and increases with the cross-section of the wire.

• is unaffected by the change in its length and area of cross-section.

Answer 1

The resistivity of a wire is unaffected by the change in its length and area of cross-section.

Explanation:

The material's resistivity is its property. It is not affected by size or shape.