Three point charges + q , − 2 q are placed at points ( x = 0 , y = a , z = 0 ) , ( x = 0 , y = 0 , z = 0 ) and ( x = a , y = 0 , z = 0 ) respectively. The magnitude and direction of the electric dipol

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Three point charges + q , − 2 q are placed at points ( x = 0 , y = a , z = 0 ) , ( x = 0 , y = 0 , z = 0 ) and ( x = a , y = 0 , z = 0 ) respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are:NEET 2007

TestHub · Accepted Answer

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 ​ = q 2 a 2 + q 2 a 2 ​ = 2 ​ q a ​ Along the direction 4 5 ∘ that is along OP where P is ( + a , a , 0 )

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