A point on the axis of a bar-magnet and
@ A point on the equatorial line of the bar-magnet. Compare the magnetic fields in
the two cases, if these points be equidistant from the centre of the magnet and the
magnet be a short one.
What do you mean by magnetic potential at a point? Obtain an expression for the mag-
netic potential, at any point on the axial line of a magnet.
Derive an expression for the torque on a magnetic dipole placed in uniform magnetic
field. Hence define magnetic dipole moment.
state and explain tangent law when a magnetic needle, free to rotate in a horizontal plane
is placed in crossed fields at right angles to each other.
What are the elements of earth's magnetic field? Explain their meanings. Show these
elements in a labeled diagram and deduce various relations between them.
1. Define the terms geographic axis, magnetic axis, magnetic equator, magnetic meridian
and geographic meridian
2 What is terrestrial magnetism? What are the causes of terrestrial magnetism.
3. What is the force between two magnetic poles of strength 3.2 Am and 3.6 Am at a
distance of 12 cm from one another?
(Ans : 9.6 × 10-N)
4 Abar-magnets of magnetic moment 5.0 Am has poles 20 cm apart. Find the pole strength.
[Ans : 25 Am]
Answers
Answer:
A point on the axis of a bar-magnet and
@ A point on the equatorial line of the bar-magnet. Compare the magnetic fields in
the two cases, if these points be equidistant from the centre of the magnet and the
magnet be a short one.
What do you mean by magnetic potential at a point? Obtain an expression for the mag-
netic potential, at any point on the axial line of a magnet.
Derive an expression for the torque on a magnetic dipole placed in uniform magnetic
field. Hence define magnetic dipole moment.
state and explain tangent law when a magnetic needle, free to rotate in a horizontal plane
is placed in crossed fields at right angles to each other.
What are the elements of earth's magnetic field? Explain their meanings. Show these
elements in a labeled diagram and deduce various relations between them.
1. Define the terms geographic axis, magnetic axis, magnetic equator, magnetic meridian
and geographic meridian
2 What is terrestrial magnetism? What are the causes of terrestrial magnetism.
3. What is the force between two magnetic poles of strength 3.2 Am and 3.6 Am at a
distance of 12 cm from one another?
(Ans : 9.6 × 10-N)
4 Abar-magnets of magnetic moment 5.0 Am has poles 20 cm apart. Find the pole strength.
[Ans : 25 Am]
Answer:
what is the force between two magnetic poles of strength 3.2 Am and 3.6 Am at a distance of 12 cm from one another
Explanation:
what is the force between