W9_parallel_resonance.eps
Week 8: Faraday’s Law and Induction 279 R B n Single turn for field.increasing Direction of induced E ∆VL l (lower V) (higher V) ...
280 Week 8: Faraday’s Law and Induction Nothing to it! Now suppose thatI(t) =I 0 sin(ωt) (a reasonable assumption for harmonic a ...
Week 8: Faraday’s Law and Induction 281 inductance of a long straight wire and a rectangular loop above. Again, trynotto have to ...
282 Week 8: Faraday’s Law and Induction 8.8: LR Circuits From here on out, with rare exceptions we will work withinductorsas (se ...
Week 8: Faraday’s Law and Induction 283 forI(t) that is at least approximately correct, we would then guess: I(t) = V 0 R ( 1 −e ...
284 Week 8: Faraday’s Law and Induction Power Let’s track the flow of energy in this circuit. Remember, the power delivered to/u ...
Week 8: Faraday’s Law and Induction 285 works, but it is useful toshow howit works in an actual context from time to time to rei ...
286 Week 8: Faraday’s Law and Induction Note that I stuck delta’s in so that I could relate the amount of energy per amount of v ...
Week 8: Faraday’s Law and Induction 287 B(in) v Ieddy copper sheet Ieddy Fm Figure 106: A sheet of copper being pulled rapidly o ...
288 Week 8: Faraday’s Law and Induction Magnetic brakes can use this same principle to stop a car, although (as a homework probl ...
Week 8: Faraday’s Law and Induction 289 We don’t have to go to the extreme case of superconductivity to require a bit of quantum ...
290 Week 8: Faraday’s Law and Induction average, to produce a net current running around the perimeterof the object. This curren ...
Week 8: Faraday’s Law and Induction 291 due to an applied magnetic field that causes their angular momentum toprecess around the ...
292 Week 8: Faraday’s Law and Induction Internal current cancels Net surface current Surface current does not Applied External M ...
Week 8: Faraday’s Law and Induction 293 a) antiparallel spins b) parallel spins energy out Figure 110: A cluster of five magneti ...
294 Week 8: Faraday’s Law and Induction surface current internal atomic (spin) currents N S B inside Figure 111: In a ferromagne ...
Week 8: Faraday’s Law and Induction 295 Finally (and best of all), it looks like changing magnetic fields are somehow able to cr ...
296 Week 8: Faraday’s Law and Induction for the few, but for every person on the planet. The Sun, the windand the water can prov ...
Week 8: Faraday’s Law and Induction 297 Homework for Week 8 Problem 1. Physics Concepts Make this week’s physics concepts summar ...
298 Week 8: Faraday’s Law and Induction a) The terminal velocity of the rod (after the switch has been closed a very long time). ...
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