Question

question 3
why is the plastic coating around the wire in the demo important?
it changes the direction of current
it acts as an insulator and protects from electric shock
it keeps the wire warm
it helps move electricity faster

Explanation:

Plastic is an insulator. Insulators prevent the flow of electricity. In the context of a wire, the plastic coating acts as an insulator. This insulation protects people from electric shock by preventing the electricity in the wire from coming into contact with them.

Answer:

It acts as an insulator and protects from electric shock.