Choose the correct sketch of the magnetic field lines of a circular current loop shown by the dot $ \odot $ and the cross $\otimes .$
JEE MAIN 2013, Medium
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If magnetic field is perpendicular and into the plane of the paper, it is represented by cross $\otimes .$ and if the direction of the magnetic field is perpendicular out of the plane of the paper it is represented by dot $\odot $ .
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