Three point charges 
and +q are placed at points 
, 
and 
respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are
A
along the line joining points 
and ( 
B
qa along the line joining points ( 
and 
and
C
along +x direction
D
along +y direction.
Text Solution
Verified by ExpertsThe correct answer is:
A
This consists of two dipoles, -q and +q with dipole moment along with the +y ‐direction and -q and +q along the x ‐direction.
The resultant moment 
Along the direction 
that is along OP where 
is 
.
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