Question Detail
Question
Three charges Q1 = 6.0 mC, Q2 = -6.0 mC and Q3 = 4.0 mC are located at -0.6i, 0.6i and +0.8j. Find the net force on Q3 charge.
Correct Answer
Option A is the correct answer.
Detailed Explanation
Adding the Coulomb force vectors from Q1 and Q2 acting on Q3 (using the given coordinates) and resolving into components gives a net force along the i-direction of about 0.26 N.
Hint
Resolve each Coulomb force on Q3 into x and y components before summing.