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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A small magnet of magnetic moment π×10^−3 A m^2 is placed on the Y-axis at a distance of 0.1 from the origin with its axis parallel to the X-axis. A coil have 169 turns and radius 0.05 m is placed on the X-axis at a distance of 0.12 m from the origin with the axis of the coil coinciding with the X-axis. Find the magnitude and direction of the current in the coil for a compass needle placed at the origin, to point in the north-south direction.

A small magnet of magnetic moment π×10^−3 A m^2 is placed on the Y-axis at a distance of 0.1 from the origin with its axis parallel to the X-axis. A coil have 169 turns and radius 0.05 m is placed on the X-axis at a distance of 0.12 m from the origin with the axis of the coil coinciding with the X-axis. Find the magnitude and direction of the current in the coil for a compass needle placed at the origin, to point in the north-south direction.

such that their axes are perpendicular to each other. Find the magnetic field at a point midway between the two magnets. Two identical short bar magnets each of magnetic moment 12⋅5 A m^2 are placed at a separation of 10 cm between their centers