Question

From choices a-e how will each change affect the magnetic force on the particle? In the below situation.

A charged particle moving at a constant speed is entering a region in which there is a uniform magnetic field. A number of changes to this initial situation are described 1-6 below. Select from choices a-e how each change will affect the magnetic force on the particle shortly after it enters the magnetic field.

This change will:

a) alter only the direction of the force on the particle.

b) only increase the magnitude of the magnetic force on the particle.

c) only decrease the magnitude of the magnetic force on the particle.

d) alter both the magnitude and direction of the magnetic force on the particle.

e) not affect the magnetic force on the particle.

f) cause the magnetic force on the particle to be zero.

Each change below refers to the initial situation described above:

1) The +q particle is replaced by a +2q particle. ---

2) The +q particle is replaced by a -q particle. ---

3) The +q particle is replaced by a neutral particle. ---

4) The particle enters the region moving at a slower initial velocity. ---

5) The magnetic field is one-third its original strength. ---

6) The direction of the magnetic field is parallel to the particles initial velocity. ---

Answer 1