Question

The ratio of lengths of 2wires of same material is 2:3 , the ratio of area of cross section is 3:2,then the ratio of their resistances is

Answer 1

Let one is L and another is l

L:l = 2:3. A:a = 3:2

As we know. :-

R proportional to l/a

R:r = 4: 9

Hope this helps u....