Question

Two wires a and b of equal masses on of the same metal are taken the diameter of the wire a is half the diameter of the wire be the resistance of the wire a 24 ohm calculate the resistance of the wire be

Answer 1

Answer: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

Explanation: