Question

give proper answer, meaningful​

Answer 1

Answer:

electric wires are covered with plastics to insulate the electric wires

Answer 2

Answer:

1)electric wire is covered with plastic because plastic is insulator and it didn't pass current in it

3)water is the essential things for surviving without water life is not possible in earth

4)electric switch is neccesary in electric circuit its work is to on/off the electric supply which pass through it.

hopes its helpful