| Onsite |

MIT Physics Videos

Warning: Doing this to your home TV
can permanently damage it!!





Review - Like poles or Opposite Poles?

Dorling Kindersley Books




Like Poles




F) Magnetic Force on moving charges


A charge shot through
a magnetic field
experiences a magnetic force.





What is moving this beam of electrons?

St. Mary's H.S. Physics YouTube Channel




Television Tube
Physics 2000

Electron in Magnetic Field - Flash

[ HTML5 ]
St. Mary's H.S.



School Block YouTube? Use file below.


Scientific Advisors: Dr. Saul Dushman;
Dr. Roman Smoluchowski;
Dr. David Harker  Prelinger Archives
Production Company: Wolff (Raphael G.)
Studios, Inc.
Audio/Visual: sound, color
Creative Commons license: Public Domain

St. Mary's Physics YouTube Channel





Moving charges create their own magnetic field



Force on a moving charge in a magnetic field is maximum when ...


a) .... the charge is Fast or Slow?







b) Big Charge or Small Charge?






c) ... magnetic field strong or Weak?






1. Fmag = Bqv 


B - flux density of magnetic field (strength)


q - charge (C)


v - velocity (m/s)





Magnetic force is maximum
when charge moves
to field

(Charge shot up)



Magnetic force = 0
when charge moves ...


... parallel to field






2. Direction of magnetic F on a charge moving through a magnetic field


Electron in Magnetic Field II - Flash

[ HTML5 ]
St. Mary's H.S.




Use 3rd Left Hand Rule



1) Draw in flux lines


2) Thumb - direction of moving charge


3) 4 fingers - direction of magnetic Field


4) Palm - direction of force on charge




Answer: Into or Out of the page?




Out of Page







Into page





Figure 2:


Into or Out of page?







Into Page







Left Hand Rule Game

[ HTML5 ]
St. Mary's H.S.






Helmholtz Coil


Mapping the direction of the Electromagnet



Finding the mass of an electron - Helmholtz Coil






| Onsite Version |


Neodymium magnet/TV


School Block YouTube? Use file below.

| Onsite |

Warning: Doing this to your home TV
can permanently damage it!!



ŠTony Mangiacapre., - All Rights Reserved [Home]
Established 1995
Use any material on this site (w/ attribution)