Question

Why are the electric wires used in homes usually covered with materials like plastic or rubber?

• A. To prevent rusting.
• B. To make handling easier.
• C. To insulate wires.
• D. To make them look beautiful.

Answer 1

The correct option is C

To insulate wires.

Electric wires used in homes generally have a plastic or rubber covering so as to prevent shocks when we touch them. Our body can conduct electricity, so when we hold the current-carrying wire without any covering, the current flows through our body which gives us a shock. Without the covering, the wires may come in contact with each other and cause short-circuit as well.