If the wire has resistively per unit area of cross-section.the resistance between `A` and `B` is

The specific resistance per unit area of cross section of a wire is equivalent to –

Braking froce per unit area of cross section of a wire is called

What is the effect on resistance, if the area of cross section is increased.

A wire of resistance 4 Omega is stretched to twice its original length. In the process of stretching, its area of cross-section gets halved. Now, the resistance of the wire is

A wire of resistance 4 Omega is stretched to twice its original length. In the process of stretching, its area of cross-section gets halved. Now, the resistance of the wire is

A wire of given material having length l and area of cross-section A has a resistance of 4 n. What would be the resistance of another wire of the same material having length 1/2 and area of cross - section 2A ?

Two copper wires A and B of length l and 2l respectively, have the same area of cross-section. The ratio of the resistivity of wire A to the resistivity of wire B is

Two wires are of same length and same area of cross-section. If first wire has resistivity rho_1 and temperature coefficient of resistance alpha_1 but second wire has resistivity rho_2 and temperature coefficient of resistance alpha_2 . Their series equivalent resistance is independent of small temperature changes. Then