[" (a) Two wired "A" and "B" have length "L" and "2L" and radius "R" and "2R" respectively.Find the "],[" ratio of resistance in series combination of both have same material."]

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

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 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 copper wire of length l and 2l have radii, r and 2r respectively. What si the ratio of their specific resistance.?

Two copper wire of length l and 2l have radii, r and 2r respectively. What si the ratio of their specific resistance.?

Two wires made from the same material have their lengths L and 2L and the radii 2r and r respectively. What is the ratio of their elongation if they are stretched by the same force ?