Question

A metallic wire having resistivity p is cut into four equal parts. The resistivity of each part is?

• A. p
• B. 4p
• C. p/2
• D. p/4

Answer 1

Answer:

A. p

Resistivity (ρ) is a material property and does not depend on the length or cross-sectional area. Cutting the wire into parts does not change its resistivity; thus, each part has resistivity ρ.