Repelling force occurs when the charges are of like signs.

Under what conditions will there be a repelling force between two charged objects?

In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. That is, a positively charged object will exert a repulsive force upon a second positively charged object.

What happens when a rubber rod?

What happens when a rubber rod is rubbed with a piece of fur, giving it a negative charge? Electrons are added to the rod. ... When a glass rod is rubbed with silk and becomes positively charged, electrons are removed from the rod.