Final answer:
When a negatively charged object is grounded, the excess negative charge flows into the ground. Electrons, which carry the negative charge, flow from the object to the ground. By connecting the object to the ground, the excess negative charge is neutralized.
Step-by-step explanation:
When a negatively charged object is grounded, the excess negative charge on the object flows into the ground through a conducting path. Electrons, which carry the negative charge, flow from the object to the ground.
Grounding allows for the transfer of charge to and from the Earth's large reservoir. The Earth, being a good conductor, can easily supply or accept excess charge. By connecting the object to the ground, the excess negative charge is neutralized, leaving the object with a balanced charge.
So, after grounding a negatively charged object, the excess electrons that were on the object flow into the ground, making the object neutral.