EM fields and energy

  • #1
spaghetti3451
1,344
33
I have been told that

1. EM fields contain energy.
2. EM fields can store energy, e.g. capacitors.
3. EM fields can transmit energy, e.g. via waves.

How are 1. and 2. any different from each other?
 

Answers and Replies

  • #2
jtbell
Mentor
15,931
4,570
The two statements say the same thing using different words.
 
  • #3
spaghetti3451
1,344
33
Thank you very much for your reply.

To move on, I just want your view on this definition of mine.

An electromagnetic field is an arbitrary configuration of electric fields (either finite or infinite in extent) that is either static or changing in time.

If the electromagnetic field changes in time, a magnetic field is induced whose properties and configurations are given by Maxwell's equations of electromgnetism.

Am I right?
 

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