Question

E. Short Answer Type Questions :
1. Define open circuit and closed circuit.
2 Give the names and symbols for any three common electrical components.
3. What is an electric fuse?
4. Give three uses of electromagnet.
5. Explain the importance of using fuse in a household electric circuit.​

Answer 1

Answer:

ANS-1 An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout. A device designed to open or close a circuit under controlled conditions is called a switch.

ANS-3 In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide over current protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.

ANS-4 Electromagnets are very widely used in electric and electromechanical devices, including:

Motors and generators.

Transformers.

Pickups.

Relays.

Electric bells and buzzers.

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