Q.

Why rubber or plastic used to cover electric wires ?

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a

To give strength to the circuit

b

All of the above

c

To appear good

d

They are insulators and do not allow electric current to pass when we touch those wires

answer is B.

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Detailed Solution

Rubbers and plastic are used to cover electric wires because they are insulators and do not allow electric current to pass when we touch those wires.

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