Question

What happens when the filament of a bulb connected in a circuit fuses?

• A. The current in the circuit increases leading to the damage of the remaining part of the circuit.
• B. It leads to the heating of the battery source.
• C. The flow of the current in the circuit stops suddenly.
• D. The fusing of a bulb is nothing but the glowing of the bulb at maximum intensity.

Answer 1

The correct option is C The flow of the current in the circuit stops suddenly.

The fusing of a bulb is a process in which the melting and breaking of a tungsten filament take place. This can happen when there is a flow of excess current through the filament due to the fluctuations in the voltage. The fusing of the bulb breaks the current flow in the remaining part of the circuit. This fusing is a result of excess heating by electric current.