MDCAT Physics MCQ #1531

The force between two point charges is 0.036 N when they are 0.2 m apart. If the distance is increased to 0.6 m, the force becomes

MDCAT Physics MCQ #1531

  1. Question 1

    Q1. The force between two point charges is 0.036 N when they are 0.2 m apart. If the distance is increased to 0.6 m, the force becomes

    • A) 0.004 N
    • B) 0.012 N
    • C) 0.036 N
    • D) 0.108 N

    Answer: 0.004 N

    Explanation: F ∝ 1/r^2, so F at 0.6 m is (0.2/0.6)^2 times F at 0.2 m = 0.004 N. Wrong options misapply inverse square law.