EASY
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A long magnet of magnetic moment M and a pole strength m is broken into two halves of equal length along the equatorial line. The magnetic moment of each half is

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Important Questions on Properties of Magnets and Terrestrial Magnetism

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The magnetic potential at a point on the axial line of a bar magnet of dipole moment M is V. What is the magnetic potential due to a bar magnet of dipole moment M4 at the same point 
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The point form of the relation connecting vector magnetic potential A and current density J is 
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The magnetic induction field strength due to a short bar magnet at a distance 0.20m on the equatorial line is 20×10-6T. The magnetic moment of the bar magnet is
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Find the flux density B when the potential is given by Xi+Yj+Zk in air.
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The magnetic induction field strength at a distance 0.2m on the axial line of a short bar magnet of moment 3.6 Am2 is
MEDIUM
The magnetic potential due to the bar magnet in the broad-on-position is zero.
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The magnetic vector potential for a line current will be inversely proportional to
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A bar magnet of magnetic moment M is cut into two equal parts along its axis. This magnetic moment of each part is-
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The magnetic field strength at a point at a distance d from the centre on the axial line of a very short bar magnet of magnetic moment M is B. The magnetic induction at a distance 2d from the centre on the equator line of a magnetic moment 8M will be 
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The current element of the magnetic vector potential for a surface current will be-
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The magnetic potential a point on the axial line of a bar magnet of dipole moment M is V. What is the magnetic potential due to a bar magnetc of dipole moment M4 at the same point?
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Find the magnetic field intensity when the magnetic vector potential Xi+2Yj+2Zk.
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Find the vector potential when the field intensity 60 x2 varies from 0, 0, 0 to 1, 0, 0.
EASY
The magnetic potential at a point on the axial line of magnet of dipole moment M is V. What is the magnetic potential due to a bar magnet of dipole moment M4 at the same point?
MEDIUM
The magnetic potential at a point on the axial line of a bar magnet of dipole moment M is V. What is the magnetic potential due to a bar magnet of dipole moment M2 at the same point.
EASY
A bar magnet has a magnetic moment of 0.4 Am2. On cutting it into equal halves along equatorial line, each half will have a magnetic moment of: