Question

A negatively charged rod is touched by an uncharged electroscope. Which of the following statements is true when the rod is removed and the electroscope is grounded?

• A. Positive charge flows from the electroscope to the ground.
• B. The positive charge flows from the ground to the electroscope.
• C. Negative charge flows from the electroscope to the ground.
• D. Negative charge flows from the ground to the electroscope.

Answer 1

The correct option is C Negative charge flows from the electroscope to the ground.

The uncharged electroscope gets a negative charge when touched by the rod. When grounded, the negative charge flows to the ground due to earthing. Earthing is the process of discharging charges on a body to the Earth which acts like a giant sink.