Question

What is a bulb? Mention two main conditions necessary to make
the bulb glow.​

Answer 1

Answer:

An electric bulb is a device which produces light when electricity is passed through its terminals. The bulb has two thick contact wires in the center with a thin wire attached between them. This thin wire is called filament.

Mention two conditions necessary to make the bulb glow ​

(i) There should be an electrical source, i.e., one or more electric cells connected to a circuit. (ii) There should not be any gaps or discontinuity in the wires connected to the circuit. (iii) The switch connected to the circuit should be kept closed.

Explanation:

Answer 2

An electric bulb refers to an electric lamp which consists of a translucent or transparent glass housing. It is also known as a light bulb. This simple device has been used for the purpose of illumination for more than a century.

(i) There should be an electrical source, i.e., one or more electric cells connected to a circuit. (ii) There should not be any gaps or discontinuity in the wires connected to the circuit. (iii) The switch connected to the circuit should be kept closed.