lecture22

lecture22 - Physics 2102 Gabriela González Exam...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

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) ...
View Full Document

This note was uploaded on 05/20/2011 for the course PHYS 2102 taught by Professor Gimmnaco during the Fall '08 term at LSU.

Ask a homework question - tutors are online