Two wires of same material and length have the radii of their cross sections as r and 2r, respectively. The ratio of their resistances

Two wires of same material have lengths, L and 2L and cross-sectional area 4A and A, respectively. The ratio of their resistances would be

Two wires of same material have length L and 2 L and cross– sectional areas 4 A and A respectively. The ratio of their specific resistance would be

Two wires of same material and length have resistance 5 Omega and 10 Omega respectively. Find the ratio of radii of the two wires.

Two wires of same material and length have resistances 5 Omega and 10 Omega respectively. Find the ratio of radii of the two wires.

Two wires of same material have length L and L/2 and radius r and r/2 respectively. The ratio of their Young's modulus is

Two wires made of same material have lengths in the ratio 1:2 and their volumes in the same ratio. The ratio of their resistances is

Two wire of copper have length L and 2L and cross section 2A and A respectively .The ratio of their specific resistance would be would be

Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare : their resistances,