Question

______ is used to make a solenoid-type coil in an electric bulb.

विकल्प

• Nichrome

• Copper

• Tungsten

• Aluminium

Answer 1

Tungsten is used to make a solenoid-type coil in an electric bulb.

Explanation:

1. The electric bulb works on the principle of the heating effect of electric current.
2. The solenoid-type coil of the bulb has high resistivity and a very high melting point.
3. When current is passed through the bulb, the solenoid-type coil of the bulb gets heated to a high temperature (up to 3400°C) and starts glowing.