Question

A material of resistivity (ρ) is used to make a wire of length (l). If this wire is divided into two equal pieces, the resistivity of the two pieces is equivalent to:

Options

• ρ

• `ρ/2`

• 2ρ

• 4ρ

Answer 1

ρ

Explanation:

Resistivity is a property of the material and does not depend on the length or thickness of the wire. Dividing the wire into two equal pieces changes the resistance, but the resistivity remains the same.