How did the tutorial we did today relate to Faradays Law and the relation between induced EMF and change in flux? How did the equations we saw at the beginning of class relate to the problems?
In R01 we didn’t quite get far enough in the tutorial to the place where Faraday’s Law (which relates change in flux to induced EMF) is applied: please see the rest of the tutorial. The first part of the tutorial basically just tried to show how you can get an induced current (and its direction) by thinking directly about magnetic forces on charged particles in a loop. But you could also think of this in terms of Faraday’s Law as: since flux through the loop changes, EMF (and hence current) is created. We did cover some Lenz’s Law ideas in the first part of the tutorial, i.e. that induced current is such that it opposes the motion (we showed this explicitly for the case of a loop moving in a non-uniform magnetic field). In the next pages of the tutorial, some EMFs are calculated using Faraday’s Law. We’ll see some examples next recitation.
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