Question

A cylindrical conductor of length l and uniform area of cross-section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.​

Answer 1

Answer:

2

Explanation:

1 case

R=row l/a

row =resistivity

since resistivity of a material remains same

2 case

R= row 2l/a

so a=2

Answer 2

Answer:

P= RA/l

When Length doubles

P= RA/2l

RA/l = RA/2l

A = 2A

Explanation:

HOPE IT IS VERY HELPFUL TO Y0U MY BESTIE

PLS MARK AS BRAINLIST ANSWER