MCAT Physics Question 61: Answer and Explanation
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Question: 61
1. Question below refers to the figure below, in which F represents the electrostatic force exerted on charged particle S by charged particle R.
In the figure, the magnitude of the electric force on R due to S is:
- A.
- B. F.
- C. 2F.
- D. 4F.
Correct Answer: B
Explanation:
According to Newton's third law, if R exerts a force on S, then S exerts a force with equal magnitude but opposite direction back on R. Therefore, the magnitude of the force on R due to S is F.