Q.

Three charges +2q, +3q and -4q are situated at (0,-3a), (2a,0) and (-2a,0) respectively in the xy plane. The resultant dipole moment about origin is _____.       [2026]

1 2qa(3j^-7i^)  
2 2qa(7i^-3j^)  
3 2qa(3i^-7j^)  
4 2qa(3j^-i^)  

Ans.

(2)