Two wires of the same material and having lengths in the ratio of 2:3 are connected in series.The p.d.s across the wires are 4.2V and 3.6V respectively. ratio of their radii.

Two wires A and B made of same material and having their lengths in the ratio 6:1 are connected in series The potential difference ascross the wire 3V and 2V respectively. If r_A and r_B are the radii of A and B respectively, then r_B/r_A is

Two wires of the same material having lengths in the ratio 1 : 2 and diameters in the ratio 2 : 3 are connected in series with an accumulator. Compute the ratio of P.D. across the two wires.

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 wires of the same material have lengths in the ratio 1:2 and diameters in the ratio 2:1 . If they are stretched by the same force, the ratio of their expansion will be

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