Question

Two wires of equal lengths, one of copper and the other of manganin (an alloy) have the same thickness. Which dne can be used for:
(i) electrical transmission lines,
(ii) electrical heating devices? Why?

Answer 1

Answer:

I) copper

ii)manganin

Explanation:

i) copper is used in electrical transmission lines as it is a good conductor of electricity.

ii) manganin can used for heating devices as it has high melting point of about 960°C.