PYQ NEET- Magnetization Magnetism And Matter

2018:

The correct answer is (A).

The magnetic moment of a bar magnet is given by the equation $M = m\ell$, where $m$ is the pole strength and $\ell$ is the length of the magnet. When a bar magnet is cut into two equal parts, the pole strength of each part is halved, but the length remains the same. Therefore, the magnetic moment of each part is $M/2$.

2017:

The correct answer is (A).

The magnetic force on a current-carrying wire in a magnetic field is given by the equation $F = I\ell\times B$, where $I$ is the current, $\ell$ is the length of the wire, and $B$ is the magnetic field strength. In this case, the magnetic field is uniform, so the magnetic force on the wire is zero.

2016:

The correct answer is (C).

The resultant magnetic moment of two identical bar magnets placed perpendicular to each other with their unlike poles in contact is equal to the sum of the magnetic moments of the two magnets. In this case, the magnetic moment of