Question

Mention the provision of two different current ratings in our domestic circuits. Explain with reason the advantage of such a provision.​

Answer 1

Answer:

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The two different current ratings provided in domestic circuits are 5A and 15A. This is because different electrical appliances have different power ratings, so they draw different currents when connected in the mains some appliances need smaller currents, while some other need heavy currents.

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Answer 2

Answer:

The two different current ratings provided in domestic circuits are 5A and 15A. This is because different electrical appliances have different power ratings, so they draw different currents when connected in the mains some appliances need smaller currents, while some other need heavy currents.

An electric fuse is used as a safety device for the protection of electric circuits and appliances due to short-circuiting or overloading of the electric circuits. The electric fuse is a piece of wire having a very low melting point and high resistance. When a high current flows through the electric circuits due to short circuit or overloading, the fuse wire heats up and melts. The circuit is broken and the current stops flowing thereby saving the electric circuits and appliance from any damages. The capacities of fuse wire are rated as 1A, 2A, 3A, 5A, 10A, and 15A. An electric composes pure tin or alloy of copper and tin.

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