A charged particle enters a region of uniform magnetic field with its initial velocity directed: perpendicular to the field. Show that there is no change in he kinetic energy of the particle in both the cases.

A charged particle enters a region of uniform magnetic field with its initial velocity directed: parallel to the field. Show that there is no change in the kinetic energy of the particle in both the cases.

A charged particle placed in a uniform magnetic field experiences :

When a charged particle moves perpendicular to a uniform magnetic field, then

A neutron, a proton, an electron and an alpha -particle enter a region of uniform magnetic field with the same velocities. The magnetic field is perpendicular and directed into the plane of the paper. The tracks of the particles are labelled in the figure . The electron follows the track

A charged particle moves through a magnetic field directed perpendicular to its direction of motion, quantity of the particle not changing is