Question

A wire of 3ohm and 5 cm length is stretched into 15 cm what will be the new resistance of wire will be

Answer 1

Answer:

9ohm

Explanation:

since resistance is directly proportion to length.

since, here length is increases it's three times that is 3(3cm)=15cm.

so, resistance also increases it's three times that is 3{3ohm}= 9ohm.

I hope this will be helpful.