Question

Find the ratio of resistance of two wires of the following dimension for the same material

Answer 1

Answer:

3:2

Explanation:

ratio of resistance of wire A and B=rho×30m/2mm:rho×10m/1mm

(Since material us Same so rho on both sides is cancelled)

Ratio=30000mm/2mm:10000mm/1mm=15000/10000=3:2