Fall 2001
Today's Lecture (10/19):Summary:
- Circuits with inductors and resistors (RL circuits) can be analyzed in much the same way as RC circuits. Now we have V=L(di/dt) rather than i=C(dV/dt), which gives us a slightly differential equation, but the solutions are still decaying exponentials in time.
- One application of Faraday's Law is the transformer. It works by having some amount of flux from a primary coil also pass through a secondary coil. If the current in the primary depends on time, then Faraday's Law says that there will be an induced emf in the secondary. If you have lots of turns on the secondary, you can get a very large emf as was seen in the spark plug demonstration.
Conceptests:
Assignments:Next Reading Assignment (due 10/29)
Next Homework (due 10/31)
Diversion-of-the-week:This week I'm encouraging you to explore methods of creative thinking. I know, you're probably thinking creativity is not something that can be learned! But shouldn't you give it a try. The creativity web may just give you a few ideas.
Please contact the WebEditor with site-related questions.