Question

if we increase the length of a wire by three times then find the ratio of final resistance with initial resistance​

Answer 1

$bonjour$

Explanation:

Resistance is directly proportional to length and inversely proportional to area. If the length increases by x%, then Resistance also increases by x%. i) Say Wire has a resistance of 10Ω; Wire is stretched to 3 times its original length and has a cross-sectional area of 1mm2.

hope it help✌✌

follow me ..