Final answer:
Charging by induction is the process by which a positively charged object can give another object a negative charge.
Step-by-step explanation:
The process by which a positively charged object can give another object a negative charge is called charging by induction.
During charging by induction, a positively charged object is brought near a neutral object, which causes the charges in the neutral object to separate. The positive charges of the neutral object are attracted to the negatively charged object, leaving behind an equal amount of negative charges on the neutral object.
For example, if a positively charged rod is brought near a neutral metal sphere, the sphere becomes polarized. By grounding the sphere, electrons from the Earth's ample supply are attracted to the sphere, resulting in an induced negative charge. When the positive rod is removed, the sphere remains negatively charged due to the transferred electrons.