AP Physics 1 Question 267: Answer and Explanation

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Question: 267

3. The figure below shows three point charges, all positive. If the net electric force on the center charge is zero, what is the value of y/x ?

  • A.
  • B.
  • C.
  • D.

Correct Answer: C

Explanation:

C

If the net electric force on the center charge is zero, the electrical repulsion by the +2q charge must balance the electrical repulsion by the +3q charge: