Question

A copper wire has a diameter of 0.5 mm and resistivity of 16 x 10-22 m.
(a) What will be the length of this wire to make its resistance 10 2 ?
(b) How much does the resistance change if the diameter is doubled ?​

Answer 1

Answer is 120

Bhai meine jldi jldi me diya hua hai bura mt maanta hai.....BEST OF LUCK FOR TODAY'S EXAM