Question

The resistance of a wire of length of 0.48 m and diameter of 0.12 mm is 15 ohm. Calculate the specific resistance of the material of the wire.

Answer 1

Answer:

R=15 ohm

l=0.48 m

D= 0.12 mm

r=0.00012 m

Specific resistance =RA/l

$= \frac{\pi {r}^{2}resistance }{l}$

Using these values in the upper formula and you will get answer.