The resistance of a wire of uniform diameter d and length L is R . The resistance of another wire of the same material but diameter `2d` and length 4L will be

A cylindrical wire of length L and radius r has a resistance R. The resistance of another wire of the same material but half its length and half its radius will be:

A mete bridge is used to determine the resistance of an unknown wire by measuring the balance point length l. If the wire is replaced by another wire of same material but with double the length and half the thickness the balancing point is expected to be

The resistance of a wire of length 31.4 m and diameter 1 mm is 20 Omega . Find the resistivity of the material of the wire.

A wire of length L is drawn to a length 2L, then its resistance will.

The resistance of a wire of length l and diameter d is R . The wire is stretched to double its length. The resistance of the wire will now be

The resistivity of wire made up of copper having length L and radius r is x .If another wire made up of same material but length 2L and radius (r)/(2) then its resistivity will be