Question

why in some wire plastic coating is present​

Answer 1

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Perhaps the most important reason why electrical wires are covered in plastic is to protect people from electrical shock. Electricity is a dangerous form of energy and it can kill. Covering electrical wires in plastic guarantees that the electrons flowing through the wires will not flow through your body when the wire is touched.

Answer 2

Answer:

because plastic is insulator if electricity

so when we touch wire plastic help in insulate electricity

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