Two wires are of the same length, same radius, but one of them is of them is of copper and the other is of iron. Which will have more resistance ?

Two wires are of the same length, same radius, but one of them is of copper and the other is of iron. Which will have more resistance?

Two wires have the same length, same radius but one of them is made of copper and the other is made of iron. Which Will have more resistance?

Two copper wires are of the same length, but one is thicker than the other : (a) Which wire will have more resistance? (b) Which wire will have more specific resistance?

Two copper wires are of the same length, but one is thicker than the other. (1) Which wire will have more resistance ? (2) Which wire will have more specific resistance ?

Two iron spheres of the same diameter are heated to the same temperature. One is soled, and the other is hollow which will expand more?

Two iron spheres of the same diameter are heated to the same temperature. One is soled, and the other is hollow which will expand more?

Two wires made of same material have equal length and radius of one of them is twice that of the other. Find the ratio of their resistances.

Two wire, one of copper and other of iron, are of the same length and same radius. Which will have more resistance?

The iron wires of equal length are taken. One of them is thick and the other is thin. In which case will young's modulus be greater?