Lecture Demos: 5H30.10

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CRT with a Magnet

CRT with a Magnet

A bar magnet can deflect the electron beam in a cathode ray tube (CRT) according to the right-hand rule. This is due to the force a magnetic field has on a moving charge.

PIRA Code(s): 
5H30.10
Set up time: 
2 minutes
Physics and Science Concepts: 
Magnetic Fields and Forces
Operation: 
Plug in the cathode ray tube. Deflect the beam of the CRT by holding a permanent magnet near the edge of the tube. If the beam disappears, you are holding the magnet too close. Also, you can deflect the beam by attaching a battery to the binding posts and adjusting the variable control knob.
Safety: 
None

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