slides13all

slides13all - Previous Lecture Magnetic field of a current...

Info iconThis preview shows pages 1–15. 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

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

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: Previous Lecture Magnetic field of a current loop Amperes Law E dl = 0I Field of line current, solenoid, toroid. p. Announcements More homework assignments on the web. Next Monday is a recitation. p. Today Ferro-, Para-, DiaDifferent kinds of magnetism. p. Today Ferro-, Para-, DiaDifferent kinds of magnetism. Warning! You need quantum mechanics to do this right. I'm only going to give you a rough picture. p. Experimental Fact If you put an iron core into a solenoid, the magnetic field becomes MUCH stronger. p. Magnetic domains Fig. 28-20 p. Total B in Iron Fig. 28-25 p. Total B in Iron As B0 increases, more domains become aligned, and the total field increases. Fig. 28-25 p. Total B in Iron As B0 increases, more domains become aligned, and the total field increases. Saturation occurs when all domains are aligned. Fig. 28-25 p. Hysteresis What happens if we increase B0 and then decrease it again? p. Hysteresis What happens if we increase B0 and then decrease it again? Fig. 28-26 p. Dielectrics, from L-6 The total field is the sum of the field from the charges we placed, plus the field from the charges that moved around in the dielectric. p. Preview: Faraday's Law Faraday searched for a relation between B and E: Fig. 29-1 p. 1 Faraday's Discovery An induced emf is produced by a changing magnetic field. p. 1 ...
View Full Document

Page1 / 15

slides13all - Previous Lecture Magnetic field of a current...

This preview shows document pages 1 - 15. Sign up to view the full document.

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