Question

A material has a resistivity of 5 $\Omega m$. The potential difference across the material was increased by a factor of 10. The new resistivity is .

• A. 5 $\Omega$ m
• B. 50 $\Omega$ m
• C. 500 $\Omega$ m
• D. 0.5 $\Omega$ m

Answer 1

The correct option is A 5 $\Omega$ m


Resistivity is a property of the material. Potential difference across a conductor may change its current but can’t change its resistivity.