| 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.

PrinciplesofElectricityElectronDeflection

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?

 

 

 

Fast

 

 


b) Big Charge or Small Charge?

 

 

Big

 

 


c) ... magnetic field strong or Weak?

 

 

Strong

 

 


1. Fmag = Bqv 

 

B - flux density of magnetic field (strength)

 

q - charge (C)

 

v - velocity (m/s)

 

 

 

 


Magnetic force is maximum
when charge moves
perpendicular
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

 

 

Generator
Principle

 

Enrichment

| Onsite Version |

 

Neodymium magnet/TV

magnetportal.de

School Block YouTube? Use file below.

| Onsite |

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

 

 

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