How does the distance between charged objects affect the electric force between them?

a. As distance increases, the strength of the force decreases.
b. As distance increases, the force changes from negative to positive.
c. As distance increases, the force changes from attractive to repulsive.
d. As distance increases, the magnitude of the force increases.

a. As distance increases, the strength of the force decreases.

This is known as Coulomb's Law, which states that the electric force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. As the distance between two charged objects increases, the force between them decreases because the inverse relationship between distance and force dominates, resulting in a weaker force between the objects.