MCAT Physics Question 62: Answer and Explanation

Home > MCAT Test > MCAT physics practice tests

Test Information

Question: 62

2. Question below refers to the figure below, in which F represents the electrostatic force exerted on charged particle S by charged particle R.

If the distance between the centers of the spheres is halved, the magnitude of the force on S due to R will be:

  • A.
  • B.
  • C. 2F.
  • D. 4F.

Correct Answer: D

Explanation:

The force is inversely proportional to r2. Cutting the distance in half will therefore multiply the force by 22, making it four times its original value:

Previous       Next