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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Figure shows a square loop of edge a made of a uniform wire. A current i enters the loop at the point A and leaves it at the point C. Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it. `

Figure shows a square loop of edge a made of a uniform wire. A current i enters the loop at the point A and leaves it at the point C. Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it. `

is m and the magnetic field at the centre of the loop is B1 . When the dipole moment is doubled by keeping the current constant The dipole moment of a circular loop carrying a current I the magnetic field at the centre of the loop is B2 . The ratio B1/B2 is: