Question

Most of the electricity-carrying wires along the roads do not have a plastic covering like the wires used at homes. Why?

• A. The wires along the roads don't resist current
• B. Air is a bad conductor of electricity.
• C. The current flowing through the wires is not large
• D. The wires at home carry a large amount of current

Answer 1

The correct option is B

Air is a bad conductor of electricity.

Air is a bad conductor of electricity thus there is little chance of a short circuit among the wires. And since these wires are mounted on poles at a heights well above human reach, so less chances of an electric shock to any human (which would be lethal).

However, wires used in home and home appliances can come in contact with the human body or by any other conductor and can cause shock or can lead to a fire.