Question Detail
Question
Three point charges lie along the x-axis. q₁ = 15.0μC is at d = 2.00m from the origin, q₂ = 6.00μC is at the origin, and the resultant force on q₃ (negative) is zero. What is the x-coordinate of q₃?
Correct Answer
Option A is the correct answer.
Detailed Explanation
15/(2-x)² = 6/x² => 15x² = 6(2-x)² => x = 0.775m.
Hint
Set forces from both charges equal and opposite.