Question

The masses of three wires of copper are in the ratio 1:3:5 and their lengths are in the ratio 5:3:1. Then
the ratio of their electrical resistance are:
1) 1:3:5
2) 5:3:1
3) 1:15:25
4) 125:15:1​

Answer 1

Answer:

hope it helps u

Explanation:

Resistance of a wire is given as

A

ρL

This is the same as

A×L

ρL

2

=

V

ρL

2

So, resistance is proportional to

M

L

2

The ratio of resistances is,

1

25

:

3

9

:

5

1

=125:15:1

Answer 2

THIS ANSWER IS CORRECT ⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆