Four charges equal to -Q are placed at the four corners of a square and a charge q is at its centre. If the system is in equilibrium, the value of q is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The system is in equilibrium means the force experienced by each charge is zero. It is clear that charge placed at center would be in equilibrium for any value of q, so we are considering the equilibrium of charge placed at any corner.
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