Question

Two wires a and b of equal mass of same material are taken the diameter of the wire is half the diameter of b if the resistance wire a is 24 ohm calculate the resistance of wire b​

Answer 1

diameter equal to 2 pi r

diameter equal to 24 ohm

24=2r

r=12

Answer 2

Answer:

1.5

Explanation:

Same material → same density, specific resistance as they are material property.

R=

A

pl

=

A

2

pv

=

dA

2

pm

R∝

A

2

1

∝

r

4

1

R

B

R

A

=

r

A

4

r

B

4

=2

4

=16⇒R

B

=

16

24

=1.5Ω