Electromagnetism

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© 1998-2008 by Glenn Elert -- A Work in Progress
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Discussion

introduction

Keep it historical and descriptive

The hand rules as I learned to number them. (The numbers are unimportant by the way.)

Oersted's observation of the field around a straight current carrying wire.

Move on to a loop of current carrying wire. Note how coiling the wire up produces a region of diverging field lines on one side (a north seeking magnetic pole) and a region of converging magnetic field lines on the other side (a south seeking magnetic pole). Introducing the solenoid.

The source of all magnetism is moving charge.

Summary

• bullet

Problems

practice

1. Write something.
   • Answer it.
2. Write something.
   • Answer it.
3. Write something.
   • Answer it.
4. Write something completely different.
   • Answer it.

conceptual

1. Which force fields surround …
   1. a stationary electron?
   2. a moving electron?
2. Show the magnetic field around the straight current-carrying wire.
3. Show the magnetic field around the loop of current-carrying wire.
4. Show the magnetic field around the coil of wire with current moving in the indicated direction.

Resources

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