Two wires have their lengths, diameters and resistivities all in the ratio of 1:2. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is:
5 ohm
10 ohm
20 ohm
40 ohm
Two wires have their lengths, diameters and resistivities all in the ratio of 1:2. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is: