Question Detail

PHY 102 Last Minute Prep Objective Question

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?
Options
A 0.775 m
Correct Answer
B 0.376 m
C 0.875 m
D 0.795 m
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.

Question Info