NEET2013Physics-Electrostatics
NEET 2013 Physics Coulomb's Law MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A charge 'q' is placed at the centre of the line joining two equal charges 'Q'. The system of the three charges will be in equilibrium if 'q' is equal to:
A
−Q/4
B
Q/4
C
−Q/2
D
Q/2
Correct Answer
Option A
Detailed Explanation
For equilibrium, the net force on each charge must be zero. By symmetry and using Coulomb's law, q = -Q/4 satisfies this condition.
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