Question

the ratio of resistance of two wires of the same material having equal lengths and ratio of their cross section area as 1 : 3 is​

Answer 1

Explanation:

R=p(rho)l/A

According to the question the ratio of area of cross section is x and 3x

So in first wire R=pl/x

rx=pl

x=pl/R

This is the area of crossection of first wire

For second,

A=3x

3x=pl/R

Hope it helps you