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Coupled Magnetic PendulumSBU.mp4

St. Mary's Physics YouTube Channel

 

 

 

 

Flux Lines - Wire

  

Ex 2) Magnetic field around Straight Conductor (A Wire) with current

Right hand rule to determine the orientation of a magnetic field around a wire

Image created by John Wetzel, founding author of WikiPremed.
Released under a Creative Commons Attribution 3.0 License.

 

 

Magnetic field flux lines around the conductor w/ current are circular.


 
  Field into page
Field out of page




To find the direction of the flux lines: 

 

a) Use north pole of a compass

 

b) "First Left Hand Rule" Why Left and not right??

 

1) Palms away, left hand thumb direction of electron flow (current)

2) fingers curl in direction of magnetic field


 

 

 

 


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Do the magnetic lines of flux go

IN or OUT at the top?

 

 

 

 

 

 

 

 

 

 

 

 

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Review


What's wrong with this picture?

 

 

 

 

 

 

Flux lines point
out of north  into south

 

 

 

Visualizing Magnetic Fields at Home

 

 

 

 

A bar magnet is moving beneath the paper
that are covered with iron filings

 

 

Loop of Wire

 

 

 

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