Question Detail
Question
In the process of charging by induction, after a charged object is brought near a neutral conductor and the conductor is momentarily earthed, what type of charge does the conductor acquire?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The text explains: 'If A had been a negatively charged sphere, B would have acquired a positive charge.' and 'In the case of charging by induction, B has an unlike charge.' Earthing allows excess charges to flow to/from the earth, leaving the conductor with a net charge opposite to the inducing charge.
Hint
Think about how earthing interacts with the polarization caused by the inducing charge.