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Unformatted text preview: Physics 2102 Gabriela González Exam review Q1: 75.7 P1: 61.6 Q2: 67.2 Q3: 79.2 P2: 58.2 P3:52.2 • • • • Inductance deﬁniHon: L=NΦΒ/I Solenoid inductance: L=µ0n2Al Induced emf (voltage) across an inductor is E=L di/dt In an RL circuit, we can “charge” the inductor with a baVery unHl there is a constant current, or “discharge” the inductor through the resistor. Time constant is L/R. • An inductor stores magneHc potenHal energy: UB=Li2/2 • Energy density stored in a magneHc ﬁeld is uB=B2/2µ0 • An LC combinaHon produces an electrical oscillator, the natural frequency of oscillator is ω=1/√LC • Total energy in circuit is conserved: switches between energy stored in capacitor (electric energy) and in inductor (magneHc 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 05/20/2011 for the course PHYS 2102 taught by Professor Gimmnaco during the Fall '08 term at LSU.
 Fall '08
 GIMMNACO
 Physics, Inductance

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