A small electric dipole is placed at origin with its dipole-moment directed along positive x-axis. The direction of electric field at point (2,22,0) is
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a
along z-axis
b
along y-axis
c
along negative y-axis
d
along negative z-axis.
answer is B.
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Detailed Solution
tanθ=yx=222=2cotθ=12tanϕ=tanθ2=22=12=cotθNow, tanϕ=E0Er=tanθ2then ϕ=90∘−θi.e. E→ is along +ve y-axis
A small electric dipole is placed at origin with its dipole-moment directed along positive x-axis. The direction of electric field at point (2,22,0) is