EASY
12th CBSE
IMPORTANT
Earn 100

Derive an expression for the torque on a magnetic dipole placed in a magnetic field and hence define magnetic dipole moment.

Important Questions on Magnetism

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 13
Derive an expression for the potential energy of a bar magnet when placed in a uniform magnetic field.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 14
Derive an expression for the intensity of the magnetic field at an axial point of a short magnetic dipole.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 15
Derive an expression for the magnetic field due to a magnetic dipole in broad side on position at a distance r from its centre. The length of the dipole is 2l and its magnetic moment is m.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 16
A current loop behaves as a magnetic dipole. Obtain an expression for the magnetic dipole moment of a circular current loop. State the rule used to find the direction of the magnetic dipole moment.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 17
Show that the electron revolving around the nucleus in an orbit of radius r with speed v has magnetic moment evr/2. Hence using Bohr's postulate of angular momentum, obtain the expression for the magnetic moment of hydrogen atom in its ground state.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 18
Give an experimental evidence in support of the existence of earth's magnetic field.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 19
Compare the magnetic fields of a bar magnet and current carrying solenoid.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 5 - Magnetism>Text Based Exercises>Q 20
Explain with the help of diagram (i) magnetic declination and (ii) angle of dip at a place. In what direction will a compass needle point when kept at the (i) poles and (ii) equator?