Exercise (Previous Year Questions)

Three charges proton, deuteron and $\alpha$-particle are projected in uniform transverse magnetic field. Then, find the ratio of frequency.

Three charges proton, deuteron and $\alpha$-particle are projected in uniform transverse magnetic field. Then, find the ratio of angular frequency.

A magnetic field is applied perpendicular to the axis of cylindrical discharge tube. Then, cathode and positive rays are deflected in,

There is a magnetic field acting in a plane perpendicular downwards. A particle in vacuum moves in the plane of paper from left to right as shown in figure. The path indicated by the arrow could be due to,

A wire $ABCDEF$ has each side of length $l$ bent as shown in figure and carrying a current $i$. If it is placed in a uniform magnetic field $B$ which is parallel to $+y$ direction, the magnetic force experienced by the wire is,

A square current carrying loop of side ’a’ produced magnetic field at its centre is ’B’. Find magnetic moment of this loop in terms of ’B’.

A wire of length '$\mathcal{l}$’ carries a current bent into various regular polygons shown below. Find magnetic moment in terms of length of the wire. Circular loop.

A solenoid of radius $R$ and length $L$ has a current $I=I_0 \cos \omega t.$ The value of induced electric field at a distance of $r$ outside the solenoid, is