Question

In an electric bulb, light is produced due to the glowing of

• A.
  the glass case of the bulb.
• B.
  the thin filament.
• C.
  the thick wires supporting the filament.
• D.
  gases inside the glass case of the bulb.

Answer 1

The correct option is B

the thin filament.
The thin filament inside the bulb is a metal strip, having a high melting point. When the electric current is passed through this wire, it becomes red hot due to the heat produced in the filament and produces light.