Question

What is a fused bulb?

Answer 1

Hint: An electric bulb produces light when the filament inside it gets heated up and glows. To protect the filament from oxidation, the filament is enclosed in a glass bulb. The current is delivered by terminals or wires embedded in the glass to the filament. Mechanical support and electrical connections are provided by a bulb socket.


Complete step by step solution:
An electric bulb is a device which produces light when electricity is passed through its terminals. A bulb is said to be fused if the filament gets broken. Fused bulb does not glow.
The bulb has two thick contact wires in the center with a thin wire attached between them. This thin wire is called filament.
One of the thick wires is connected to the metal case at the base of the bulb and the other is connected to the metal tip at the center of the base. These two form the terminals.
When electricity is passed through the terminals of the bulb, the filament gets heated up and produces light.
The two terminals do not directly touch each other to avoid a short circuit.


Note:
An electric circuit is a complete path for electricity (current) to pass between two terminals of an electric cell.
Bulb glows when current flows through its terminals.
Conventionally, current flows from the positive terminal to the negative terminal of the battery.
A fused bulb (with broken filament) offers a broken path and hence the bulb does not glow.