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The direction of the magnetic moment of a current-carrying circular coil is

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Important Questions on Magnetism

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A coil of area A carrying a current I having n turns is suspended in a uniform magnetic field of induction B such that the normal of the coil makes an angle θ with the field. The magnitude of torque acting on it is given by
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An arrangement of a long insulated wire wound in a closely packed helix represents
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Suppose we wish to have a current carrying coil equivalent to a magnet with moment 10 A m2. When the coil has 75 turns and carries a current of 120 m A, the area of the coil is
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A torque of 25 N m acts on a current carrying coil of area 5 m2 in a magnetic field of induction 2 Wb m-2. The angle between normal to coil and magnetic field is 30°. Then value of current is
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The magnetic induction at a point distant 15 cm on the axis of a short bar magnet of moment 0.5 A m2 is
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The magnetic moment of a bar magnet is equal to the moment of couple when magnet is kept
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The torque acting on a magnet of magnetic moment M placed in a uniform magnetic field B is