PHY 2049
Unit 3

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Updated: 5/22/2017

Some magnetic-field related web links:

The last one applies to a future lab experiment.

Week 6

Mon 6/12:  Section 26.8, Ampere's law, with examples and applications.

Tues 6/13:  Examples from Section 26.5 (Biot-Savart Law) and start Section 26.6. Note that you will not have to do any Biot-Savart Law integrals on an exam. I do them in class for those taking MAC2313 and so physics and electrical engineering majors can see them at least once in this class.

Wed 6/14:  Finish Sections 26.6 and 26.7 followed by Faraday's Law in Sections 27.1 and 27.2.

Thurs 6/15:  is devoted to exam 2.

Week 7

Start of week 7:  More on Faraday's Law (Sections 27.2, and 27.6) followed by Lenz' Law (Section 27.3) and inductance (Section 27.4) and LR circuits, including magnetic energy (Section 27.5).

Wed 6/21:  NO CLASS - because of Final Exams in the 6-week May Express session.
Lab is tenatively rescheduled to meet on Wed instead of Friday as originally planned.

Thur 6/22:  Finish LR circuits (Section 27.5), then review Section 27.3 plus Section 28.1 to start AC circuits. This may include an introduction to using complex numbers to deal with reactive components in the differential equations we need to solve, but will emphasize the rms current we will examine in Lab 6 on either Wednesday or Friday.

Week 8

Mon 6/26:  Continue with Section 28.1, AC circuits, including an introduction to using complex numbers to deal with reactive components in the differential equations we need to solve, followed by an example from Section 28.2 with emphasis on phase shifts seen in Lab 6 and used again in Lab 7.

Middle of week 8:  Sections 28.2 and 28.4 (resonance and LRC demos) followed by Section 28.3 (free oscillations) that includes damping. Some of this may be in Unit 4.

Thurs 6/29:  Continue with Unit 4 material (Sections 28.5 and 28.6, illustrating filters and transformers). If I have time, I will spend some time on aspects of electrical safety that appear in Section 24.5 of our textbook, particularly household wiring. Additional Unit 4 material includes a final look at Maxwell's Equations in Section 29.1.

A large scale example of a low-pass filter like what is covered in Section 28.6 (page 502) of our book is the Bonneville Power Administration Celilio Converter Station. This is a huge AC to DC converter (or vice versa) that operates at up to 1000 kV, handling up to 3100 MW (i.e. carrying currents up to 3100 A). The converters use either tubes or thyristors (solid state diode-like devices) followed by large capacitors and inductors to smooth out the ripple.

Week 9

Mon 7/3:  Continue with Unit 4 material Sections 29.1 through 29.3, Maxwell's Equations and Ampere's Law revisited, followed by 29.4 (EM waves)..

Tues 7/4:  NO CLASS - Independence Day Holiday.

Wed 7/5:  Continue with Unit 4 material from Section 29.5 (polarization), Section 34.3 on Photons and 29.8 on light pressure, then Section 29.6 (spectra).

Thurs 7/6:  Exam 3, sections 26.4? through 28.5? covered by HW-14 thru HW-19 ?.


 ?? Contact me if you have any questions.