What will be the change in the resistance of a circular wire when its radius is halved and length is reduced by `1/4 th` of its original length?

The maximum load a wire can withstand without breaking, when its length is reduced to three times of its original length, will

what happens to the resistance of a of a metal wire, when its temperature is reduced to Kelvin zero?

The electric resistance of a certain wire of ron is R. If its length and radius are both doubled, then

What is the effect on resistance, if the length of wire is increased

A material 'B' has twice the specific resistance of 'A'. A circular wire made of 'B' has twice the diameter of a wire made of 'A'. Then for the two wires to have the same resistance, the ratio l_(B)//l_(A) of their respective lengths must be

Find the rate of the change of surface area of a sphere when its radius is increasing at the rate of 3/pi cm/min and its radius is 1 cm.

A wire of resistance 1 Omega is stretched to double its length. What is the new resistance?

A wire of resistances 1 Omega is streched to double its length. What is the new resiatnce?