Physics · May / June 2020 · Paper 12 · Question 34

A metal lightning conductor is placed on the top of a tall building. The conductor is connected to Earth. When a charged cloud passes over the building, the metal lightning conductor becomes positively charged. What happens to the lightning conductor to produce a positive charge at its top?

1. AElectrons move downwards and protons move upwards in the conductor.
2. BOnly electrons move in the conductor.
3. COnly protons move in the conductor.
4. DProtons in the air attach themselves to the conductor.

As printed in the paper