A copper wire of resistance `R_(0)` is strerched till its length is increased to n times of its original length. What will be its new resistance?

A wire of resistance R is stretched till its length becomes n times its original length. What will be its new resistance?

A metal wire of resistance 6Omega is stretched so that its length is increased to twice its original length. Calculate its new resistance.

A metal wire of resistance 62 Ohms is stretched so that its length increased to twice of original length. Calculate its new resistance

A piece of wire of resistance 10 ohm is drawn out so that its length is increased to three times its original length. Calculate the new resistance.

(i) A piece of wire of resistance 10 ohm is drawn out so that its length is increased to three times its original length. Calculate the new resistance. (ii) What is co-efficient of cubical expansion?