Question

A wire given material having length and area of cross section a has a resistence of 4 ohm . what would be the resistence of another wire of the same metirial having the length 1/2 and area of cross-section to a?

Answer 1

Answer:

Hope it helps you

This is the answer

Answer 2

Answer:

2

Explanation:

SInce L is Halved ,Therefore.

R = (rho)*l/a   =>  R(dash) = 1/2(Rho*l/a)

Therefore New resistance will be 2