Force on Moving Charge: Magnetic Fields & Forces
Force on Moving Charge: Magnetic Fields & Forces
Purpose
To demonstrate the force on charges (and subsequent change in motion) moving perpendicular
to a magnetic field.
Description
Use a magnet to deflect an electron beam.
- Power supply to Maltese cross tube is in the base of the stand.
- Fluorescent screen glows as electrons collide with screen particles.
- Maltese cross blocks part of the electron beam, hence the shadow on the tube's
end screen.
- To observe the effect of the external magnetic field on the moving electrons,
vary the placement of the magnet and the direction of the magnetic field.
Equipment
Crooke's Tube (CRT), strong & weak magnets