If the distance between two spherical charged objects decreases by a factor of two, then the electrical force between the objects
A) decreases by a factor of four.
B) increases by a factor of four.
C) is half as big.
D) doubles.
E) does not change.

Question

Quizplus · Accepted Answer

According to Coulomb's law, the electrical force between two charged objects is inversely proportional to the square of the distance between them. Therefore, if the distance between two spherical charged objects decreases by a factor of two, then the square of that distance decreases by a factor of four. This means that the electrical force between the objects increases by a factor of four, as the force is inversely proportional to the square of the distance.

If the Distance Between Two Spherical Charged Objects Decreases by a Factor