A magnetic field
Always exerts a force on a charged particle
Never exerts a force on a charged particle
Exerts a force, if the charged particle is moving across the magnetic field lines
Exerts a force, if the charged particle is moving along the magnetic field lines
An electron is moving along the positive $X$-axis. You want to apply a magnetic field for a short time so that the electron may reverse its direction and move parallel to the negative $X$-axis. This can be done by applying the magnetic field along
A charged particle is released from rest in a region of steady uniform electric and magnetic fields which are parallel to each other the particle will move in a
A charged particle moving in a magnetic field experiences a resultant force
When a charged particle enters a uniform magnetic field its kinetic energy
A particle having some charge is projected in $x-y$ plane with a speed of $5\ m/s$ in a region having uniform magnetic field along $z-$ axis. Which of the following cannot be the possible value of velocity at any time ?