Question

If a copper wire is increased to double its length its resistance will become

Answer 1

Answer:

if length of wire is doubled and cross section remains same then ,

new resistance =( R'= n²R )

R'= new resistance

R = initial resistance

n = number of times increased.

✔️ R' = (2)²R = 4R

Answer 2

Answer - Stronger

Explanation:

this is because as a wire gets longer it's resistance increases, and as it gets thinner it's resistance also increases because it's cross sectional area decreases