lecture22 - Time constant is L/R. EM oscillations An LC...

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Physics 2102 Exam review Inductors, EM oscillations Physics 2102 Gabriela González
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Exam review Q1: 75.7 P1: 61.6 Q2: 67.2 Q3: 79.2 P2: 58.2 P3:52.2
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Inductors Inductance definition: L=N ΦΒ / I Solenoid inductance: L= μ 0 n 2 Al Induced emf (voltage) across an inductor is E= - L d i /dt In an RL circuit, we can “charge” the inductor with a battery until there is a constant current, or “discharge” the inductor through the resistor.
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Unformatted text preview: Time constant is L/R. EM oscillations An LC combination produces an electrical oscillator, the natural frequency of oscillator is =1/LC Total energy in circuit is conserved: switches between energy stored in capacitor (electric energy) and in inductor (magnetic energy). If a resistor is included in the circuit, the total energy decays (is dissipated by R). i(t)...
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This note was uploaded on 11/18/2011 for the course PHYSICS 2102 taught by Professor Dowling during the Fall '10 term at LSU.

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lecture22 - Time constant is L/R. EM oscillations An LC...

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