1 / 17

by Nannapaneni Narayana Rao Edward C. Jordan Professor of Electrical and Computer Engineering

Slide Presentations for ECE 329, Introduction to Electromagnetic Fields, to supplement “Elements of Engineering Electromagnetics, Sixth Edition”. by Nannapaneni Narayana Rao Edward C. Jordan Professor of Electrical and Computer Engineering

linus-rasmussen
Download Presentation

by Nannapaneni Narayana Rao Edward C. Jordan Professor of Electrical and Computer Engineering

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. Slide Presentations for ECE 329,Introduction to Electromagnetic Fields,to supplement “Elements of Engineering Electromagnetics, Sixth Edition” by Nannapaneni Narayana Rao Edward C. Jordan Professor of Electrical and Computer Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois, USA Distinguished Amrita Professor of Engineering Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India

  2. 1.6 • The Magnetic Field

  3. The Magnetic Field • acts to exert force on charge when it is in motion. • B = Magnetic flux density vector • Alternatively, since charge in motion constitutes current, magnetic field exerts forces on current elements.

  4. Units of B: • Sources: Currents; • Time-varying electric field

  5. Ampère’s Law of Force

  6. Magnetic field due to a current element • (Biot-Savart Law) a B circular to the axis of the current element

  7. Ex.

  8. Current Distributions • Filamentary Current • I (A) • (b)Surface Current • Surface current density, JS (A/m)

  9. (c)Volume Current • Density, J (A/m2)

  10. P(r, f, z) a2 a a1 • P1.44

  11. For infinitely long wire,

  12. Magnetic Field Due to an Infinite Plane Sheet of Uniform Surface Current Density • This can be found by dividing the sheet into infinitely long strips parallel to the current density and using superposition, as in the case of finding the electric field due to an infinite plane sheet of uniform surface charge density. Instead of going through this procedure, let us use analogy. To do this, we first note the following:

  13. Point ChargeCurrent Element

  14. rL0 • (b) Line ChargeLine Current

  15. rS0 • Then, • (c)Sheet ChargeSheet Current

More Related