Question

An electrician comes to your house to fix a fan. He asks for a wooden stool to stand upon and uses rubber gloves while fixing the fan. Why do you think he does that?

• A. Wooden stools are easily available. Rubber gloves protect against cuts.
• B. Wooden stools are safe to stand on. Rubber gloves keep your hands clean.
• C. Wooden stools are cheap to buy. Rubber gloves serve no purpose.
• D. Wooden stools are good insulators. Rubber gloves are good insulators.

Answer 1

The correct option is D Wooden stools are good insulators. Rubber gloves are good insulators.

Electricity is the phenomenon of electrons moving across a conductor. Materials that allow electricity to flow are called good conductors. Materials that do not allow electricity are called insulators. Wood and rubber are good insulators and hence, needed by the electrician for safety against electrocution.