Which one or more of the following choices is (are) false regarding how a magnetic field acts on a charged particle. A magnetic field
can exert a force on a particle with at a velocity that makes
60\deg
with magnetic field.
can cause a moving particle to accelerate.
always exerts a force on a particle moving perpendicular to the field.
can increase the speed of a moving particle.
3 and 4
only 4
only 2
1 and 2
2 and 3