Question

Which of the following acts as a circuit protection device ?

• A. switch
• B. fuse
• C. conductor
• D. inductor

Answer 1

The Correct Option is B

To determine which device acts as a circuit protection device among the given options, we need to understand the role of each component in an electrical circuit.

1. Switch: A switch is used to interrupt the current flow in a circuit, both turning it on and off. However, it does not protect the circuit from overcurrent.
2. Fuse: A fuse is a safety device that protects an electrical circuit from excessive current. It contains a metal wire or strip that melts when too much current flows through it, effectively breaking the circuit and stopping the flow of electricity. This prevents damage to the circuit and connected devices. Therefore, fuse is the correct answer as it directly acts as a circuit protection device.
3. Conductor: A conductor allows the flow of electrical current but does not protect the circuit from overcurrents or faults.
4. Inductor: An inductor is a passive component used in electronic circuits to store energy in a magnetic field when electrical current passes through it. It is not used for protection purposes.

Based on the explanations above, it is clear that a fuse acts as a circuit protection device as it prevents damage by breaking the circuit when excessive current flows.