Question

Nichrome wire of length L and radius R has resistance of 10 Ω. How would the resistance of the wire change when:
i. Only the length of the wire is doubled?
ii. Only diameter of the wire is doubled? Justify your answer.

Answer 1

Answer:

r=v/l

l'=2l

both case

v/l=v/2l

1/l=1/2l

.........