Question

The thin wire that emits light inside a bulb when is passed through it is known as a .

• A. current
• B. filament
• C. water
• D. conductor

Answer 1

Answer: (A), (B)

The correct options are
A current
B filament

When an electric bulb is connected to a power source, electric current flows through the circuit. Flow of an electric current in a conductor generates a lot of heat due to the collisions between electrons and atoms. When current flows through the filament, it generates both heat and light. This happens due to the heating effect of electric current.