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Questions  

A small electric dipole is placed at origin with its electric dipole moment vector acting along positive x-axis. Direction of electric field intensity vector at a point (2m, 22m , 0) is

a
directed along +y axis
b
directed along - y axis
c
directed along +z axis
d
directed along -z axis

detailed solution

Correct option is A

tanθ=yx=2 tanα=12tanθ=12                        ⇒tanθtanα=1  , tanθ=tan(90−α)  α+θ=90°

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