A charge 
is placed at the centre of the line joining two exactly equal positive charges 
. The system of three charges will be in equilibrium, if q is equal to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
For equilibrium of charge 
, the force of repulsion due to similar charges 
should be balanced by the force of attraction due to charge 
and Q.
or 
or 
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