A charge q is placed at the center of the line joining two equal charges of magnitude Q. All the three charges are in equilibrium then what will be the value of 'q'?
A
B
C
Q
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Let the distance between the charge q and Q be 
. System is in equilibrium then net force on Q is zero.
Total force on Q at B is
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