28 - Magnetism I

28 - Magnetism I - Physics 212 Fall 2009 Magnetism I...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

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

Unformatted text preview: Physics 212 Fall 2009 Magnetism I 11/02/09 Magnetism • Gauss’ Law for Magnetism • Ampere-Maxwell Equation • Magnetism - electron magnetic dipole moment • Diamagnetism • Paramagnetism - Curie’s Law • Ferromagnetism - Interacting Spins, Domains, Hysteresis • Simple Model for the Earth’s Magnetic Field Magnetic Fields You are given a bar magnet, but the poles are not labeled. Using which of the following items can you determine which end is a north pole and which is a south pole? a) a voltmeter b) a bottle of iron particles c) a charged rubber rod d) a compass e) a steel rod Surface III B-Field from current Gauss’ Law for Magnetism Break a dipole get more dipoles Flux through any closed surface is zero “Permanent” magnet B ⋅ d A ∫ = E ⋅ d A ∫ = q enc ε Compare w/ A Charging Capacitor Capacitor Side View Capacitor End View As capacitor is charging (or discharging) the electric feld is changing dE dt ≠ Analogous to Farady, J.C. Maxwell predicted that a changing electric ¡ux will create a magnetic feld B ⋅ d s ∫ = μ ε d Φ E dt Induced Magnetic Fields...
View Full Document

This note was uploaded on 10/03/2011 for the course PHYS 221 taught by Professor Tedeschi during the Fall '09 term at South Carolina.

Page1 / 13

28 - Magnetism I - Physics 212 Fall 2009 Magnetism I...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online