Question

Why are electrical wires covered with insulators in our house hold wirings?

Why do we need electrical switch in a circuit? Draw its symbol​

Answer 1

Answer:

Answer: The covering of an electric wire is made of plastic because plastic is an insulator, which does not allow current to flow through it. ... If instead of plastic the wire is covered with aluminium foil, it can be dangerous as the aluminium foil is a conductor and can conduct electricity and lead to shocks.

Explanation:

Answer 2

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