1 / 10

Faraday's Law and Ampère-like Laws: Experiments and Applications

This outline covers Faraday's law, Ampère-like laws, mutual inductance, inductors, and magnetic field energy. Explore the experiments, examples, and calculations related to these concepts.

jgilcrease
Télécharger la présentation

Faraday's Law and Ampère-like Laws: Experiments and Applications

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. §7.2 Faraday’s law Christopher Crawford PHY 311 2014-04-25

  2. Outline • Faraday’s law – THREEexperiments, one result • EMF, Lenz’ law, special relativity • Examples: AC generator, solenoid & ring, SC levitation • Differential form – THREE Ampère-like laws, one form • Magnetic vector potential: potential momentum • Mutual inductance – transformers, inductors • Example: overlapping solenoids • Inductor – THREE electrical devices, one calculation • Example: L–R circuit • Magnetic field energy – back EMF or “electrical inertia” • Compare: electrical field energy

  3. Faraday’s law – THREE experiments

  4. Example: AC generator

  5. Example: solenoid and ring • What is I(t) in the ring? • Which direction? • Levitation of ring • Permanent for superconductors

  6. THREE Ampère-like laws Ampère’s law Vector potential Faraday’s law • Relation between E and A: will need to revisit electric potential!

  7. Mutual Inductance • Overlapping solenoid and ring: mutual inductance M • Self-inductance L

  8. Inductance – 1 of THREE components Capacitor Resistor Inductor • Each the ratio of FLUX / FLOW • Units: • Complex impedance:

  9. Example – LR-circuit

  10. Magnetic field energy • Work against the “back-EMF” is stored in the magnetic field • It acts as “electrical inertia” to keep current moving

More Related