The length of a metallic wire remains unchanged while its radius is reduced to…

PHYSICS · Subjective · CBSE · Physics · Electricity · Electricity

Problem

The length of a metallic wire remains unchanged while its radius is reduced to one-half of its original value. By what factor will its resistance change?

Related theory

Resistance & Resistivity
Electric Circuits
Electricity
Resistivity and factors affecting resistance
Resistance: geometry and temperature dependence
Current Electricity
Factors affecting resistance of a conductor

Browse the problem library