Question

GUYZZ PLZ...



a wire which has 20 ohm resistanse where the length is increased 2 times what is the new resistance?
STEP BY STEP ANS​

Answer 1

Answer:

40

Explanation:

as we know that

R=rho l/A

20=rho l/A

now if the length is increased by 2 times

so

20=rho 2l/A

so the answer is 40 ohms

hope it will help u...