Two charges of +Q are 1 cm apart. If one of the charges is replaced by a charge of -Q, the magnitude of the force between them is

Question

Quizplus · Accepted Answer

The magnitude of the force between two charges is given by Coulomb's law, which depends on the magnitude of the charges and the distance between them, not on their signs. Replacing +Q with -Q changes the direction of the force (attractive instead of repulsive) but not its magnitude.

Two Charges of +Q Are 1 Cm Apart