time-varying magnetic fields equation of continuity
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time-varying magnetic fields equation of continuity. Faraday 1791-1867. An induced electric current flows in a direction such that the current opposes the change that induced it. This law was deduced in 1834 by the Russian physicist Heinrich Friedrich Emil Lenz (1804-65). either B or - PowerPoint PPT Presentation
Transcript of time-varying magnetic fields equation of continuity
An induced electric current flows in a direction such that the current opposes the change that induced it. This law was deduced in 1834 by the Russian physicist Heinrich Friedrich Emil Lenz (1804-65).
Bewley’s book
trick questions not every motion
generates a voltage uniform B & v substitution of circuit Vgen = 0!
Equation of continuity economics If more comes out
than you put in, the bag will decrease!
There will be a flux of $.
Flux is related to what is or was inside the bag.
note that there is a flux out through a surface z • y @ a time t > 0
[flux density] • s = - [ ($ density)/t] • v evaluate @ xo