1/2 = \int_{one-cycle} cos^2 \theta d \theta ... "time averaged cos squared"
L \def \phi /over I. Ferro magnetic material increase \phi while I is kept constant. -> L goes up by definition.
Lec 25 | MIT 8.02 Electricity and Magnetism, Spring 2002
L \def \phi /over I. Ferro magnetic material increase \phi while I is kept constant. -> L goes up by definition.
Lec 25 | MIT 8.02 Electricity and Magnetism, Spring 2002
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