A point charge + Q is placed at the centroid of an equilateral triangle. When a second charge +Q is placed at a vertex of the triangle, the magnitude of the electrostatic force on the central charge is 4N. What is the magnitude of the net force on the central charge when a third charge +Q is placed at another vertex of the triangle?
A
Zero
B
4 N
C
N
D
8 N
Text Solution
Verified by ExpertsThe correct answer is:
B
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