Question

Two wires of equal length, one of copper and the other of nichrome have the same thickness. Which one can be used for (i) electric transmission lines (ii) electrical heating devices? Why?

Answer 1

(i) Electric transmission lines

-> Copper can be used because it is good conductor of electricity and has low resistivity.

(ii) Electrical heating devices

-> Nichrome can be used because it has High melting point, it do not get oxidised easily in the air and have high specific resistance.