Activity HO-18

Deflection of Moving Electrons by a Magnetic Field

October 30, 1997

• Create a Word document. Be sure to include the names of all team members.

Furthermore, you know that a current carrying coil creates a magnetic field B along
its axis that is proportional to the product of the number of turns in the coil and the
current in the coil.

Study of the deflection of electrons by a magnetic field

Examine the following picture. The
two coils produce a magnetic field
perpendicular to the plane of the electron
trajectory.

2. Describe how you expect the spot on
   the CRT screen to move when a
   current is run through the coils.
   Explain your prediction.