Chapter 15 - Electric Charge, Forces, and Fields - Learning Path Questions and Exercises - Conceptual Questions - Page 555: 9

A positive charge can be placed in between or middle of the two electrons such that each electron will experience a repulsive force from the other, at the same time can experience an attractive force from the positive charge. With proper amount of positive charge, the two forces on each electron can cancel out and balance each other.

A positive charge can be placed in between or middle of the two electrons such that each electron will experience a repulsive force from the other, at the same time can experience an attractive force from the positive charge. With proper amount of positive charge, the two forces on each electron can cancel out and balance each other.