Like charges repel.
Opposite charges attract.
Another effect of static charge*. can be shown with an
inflated children's balloon.
By rubbing the balloon on your
hair or your jumper, the balloon picks up electrons* and,
thus, negative charge - which enables the balloon to "stick" to the wall!
This occurs because the negative charges on the balloon
repel the negative charges on the wall.
The remaining opposite charges attract each other and hold the balloon in place.