Question

Which of the following statement regarding lightning conductors installed in a building is true?​

• A. A lightning conductor has a high resistance to reduce the charge flow.
• B. Used as an earthing device to protect the structure in the event of a lightning strike.
• C. It collects positive charges from the ground.
• D. Controls the flow of charges in and out of the building.

Answer 1

The correct option is B Used as an earthing device to protect the structure in the event of a lightning strike.

Lightning conductors/rods provide the path of least resistance for the flow of charge so that charge can easily flow to Earth, and hence, it can be used as an earthing device. It is used to safeguard the buildings from the damaging effects of lightning.