1.
A freely suspended bar magnet always aligns itself along the
2.
The SI unit of magnetic dipole moment is
3.
The magnetic field lines outside a bar magnet emerge from
4.
Inside a bar magnet, magnetic field lines are directed from
5.
The magnetic field at the equatorial point of a short bar magnet is directed
6.
The magnetic field at the axial point of a short bar magnet is proportional to
7.
The magnetic field at the centre of a bar magnet is
8.
The magnetic susceptibility of a diamagnetic substance is
9.
Which one is a diamagnetic substance?
10.
Which material has very high magnetic permeability?
11.
Soft iron is preferred for electromagnets because it has
12.
Steel is used to make permanent magnets because it has
13.
The torque on a magnetic dipole in a uniform magnetic field is maximum when the angle is
14.
The potential energy of a magnetic dipole is minimum when it is
15.
A bar magnet is placed in a uniform magnetic field with its North Pole pointing towards North. The torque acting on the magnet is
17.
The SI unit of magnetic field is
18.
Assertion (A): Diamagnetic substances are weakly repelled by a magnetic field. Reason (R): Their magnetic susceptibility is negative.
19.
Match the Columns Column–I P. Diamagnetic Q. Paramagnetic R. Ferromagnetic S. Soft Iron Column–II 1. Weak attraction 2. Weak repulsion 3. Strong attraction 4. Electromagnet core Choose the correct matching:
20.
The Earth's magnetic field is approximately
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