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Deflection Of Oscilloscope Beam Using A Magnet


Deflect a beam of electrons. Classes Used: Phys 102, 108

Updated on: 06/13/13


To show the force on a beam of electrons when a magnetic field is applied. To show that a flow of electrons is equivalent to a conventional current in the opposite direction.


Oscilloscope with case opened, bar magnet


The special oscilloscope can be set up to show the exposed neck of the tube. When a magnet is brought near the neck of the oscilloscope, the electron beam will move.


You can use the right-hand rule to label an unknown magnet by observing the deflection of the electron beam. Alternately, if the polarity is known, you can predict the deflection.

Demo room information

Location —-
Maker Unknown
Current State Working
demonstrations/5_electricity_and_magnetism/5h_magnetic_fields_and_forces/deflection_of_oscilloscope_beam_using_a_magnet/start.1578420482.txt.gz · Last modified: 2020/01/07 18:08 by demoroom