Question

the resistance of a wire is 20 ohms.it is so stretched that the length becomes three times then the new resistance of the wire will be​

Answer 1

Answer:

60 ohm

Explanation:

R a directly proportional to L

Answer 2

R=20 ohms

n=3

then the new resistance will be

R'=n*2×R

R'=3×3×20

R'=180 ohms

the new resistance of the wire will be180 ohms