A strong magnetic field is applied on a stationary electron, then
The electron moves in the direction of the field
The electron moves in an opposite direction
The electron remains stationary
The electron starts spinning
The time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of its
An electron moves along vertical line and away from the observer, then pattern of concentric circular magnetic field lines which are produced due to its motion
An electron is moving with a speed of ${10^8}\,m/\sec $ perpendicular to a uniform magnetic field of intensity $B$. Suddenly intensity of the magnetic field is reduced to $B/2$. The radius of the path becomes from the original value of $r$
A charged particle enters a uniform magnetic field perpendicular to it. The magnetic field
A particle of mass $m = 1.67 \times 10^{-27}\, kg$ and charge $q = 1.6 \times 10^{-19} \, C$ enters a region of uniform magnetic field of strength $1$ $tesla$ along the direction shown in the figure. the time spent by the particle in the magnetic field is......$ns$