Question

 

1)Which statements about the force on a charged particle placed in a magnetic field are true?

a)A magnetic field always exerts a force on a charged particle.

b)The direction of the force is along the magnetic field.

c)The force is a maximum if the particle is moving in the direction of the field.

d)The force causes the particle to gain kinetic energy.

e)A magnetic force is exerted only if the particle is moving.