Question

a wire of given material having length L and area of cross section A has a resistance of 4 ohm what would be the resistance of another wire of the same material having length l/2 and area of cross section 2A​

Answer 1

Answer:

1

Explanation:

R =pl/a

R'=pl/4a

if we divide R' by R

R'/R = 1/4

R' =(1/4)*R

R'= (1/4)*4

R'= 1