Question

Which of the following is a protection component that limits the amount of current flowing through the circuit and establishes a certain amount of voltage?
1. Fuse
2. Switch
3. Earthing wire
4. Voltmeter

Answer 1

Correct Answer - Option 1 : Fuse

The correct answer is Fuse.

• Fuse is a protection component that limits the amount of current flowing through the circuit and establishes a certain amount of voltage.

• Fuse
  • Fuse is designed to break the circuit and stop the current flow when the current exceeds a predetermined value.
  • The fuse can not be reset; whereas the circuit breaker can be reset.
• Circuit Breaker
  • This consists of a bimetallic strip which, when it becomes overheated from excessive current, bends away from a catch on the switch lever and permits the switch to trip open.

 

• Switch
  • A switch is an electrical component that facilitates a disconnect or conducting path in an electrical circuit.
• Earthing
  • Earthing is the immediate transferring of electrical energy directly to the earth by the help of the low resistance wire.
  • It is known as electrical earthing.
• Voltmeter
  • It an instrument used for measuring the electric potential difference between two points in an electric circuit.
  • It is connected in parallel manner.
  • It has a high resistance so negligible current is consumed by the circuit.