A charged particle projected in a limited magnetic field according to figure. The charged particle does not strike to the opposite plate provided
$B > \frac{qd}{mv}$
$B < \frac{mv}{qd}$
$B < \frac{qd}{mv}$
$B > \frac{mv}{qd}$
A strong magnetic field is applied on a stationary electron, then
Derived force on moving charge in uniform magnetic field with velocity $\overrightarrow {{v_d}} $.
Which of the following statement is true
A particle of mass $m$ and charge $q$ , moving with velocity $V$ enters region $II$ normal to the boundary as shown in the figure. Region $II$ has a uniform magnetic field $B$ perpendicular to the plane of the paper. The length of the region $II$ is $l$ . Choose the not correct choice
Maximum kinetic energy of the positive ion in the cyclotron is