Question

two wires are of same length, one of them is twice as thick as the other. Then the resistance of

Two wires are in the ratio

(A) 1:2 (B) 1:4. (C) 1:8 (D) 1:16​

Answer 1

Answer:

(A) 1:2

Explanation:

The resistance of a wire is inversely proportional to is area of cross-section, as seen in the formula -

R = ρ (l/A)

Hence, if length is doubled, resistance will be halved.

∴ The ratio of resistance of the two wires will be 1/2 : 1 = 1:2

Hope it helps!!! ^_^