The resistance value of a conductor depends on its physical dimensions. Give the expression for resistance of a conductor in terms of its physical dimension.

In all metallic conductors, electric conduction is due to drifting of free electrons. But the resistivity of different metals are different. Write the expression for resistivity of a conduc tor in terms of its dimensions.

The resistance .R. of a conductor depends on its length T., area of cross-section .A. and the resistivity .p. of the material. What happens to the resistance of the conductor if stretched to double its length?

By increasing the temperature, the specific resistance of a conductor____________.