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How much current can you produce by moving a conductive bar in a magnetic field?

posted May 2, 2018, 11:38 AM by Barbara Fortunato   [ updated May 6, 2018, 7:15 AM by Barbara Fortunato ]
5: T 5/8, 7: M 5/7

Today, we'll take a look at a moving bar in a magnetic field which will produce a motional emf.  Using what we learned last time about Faraday's Law, we'll derive an equation that can help you understand this relationship.  (Faraday's Lawε = -N ΔΦ/Δt and I = ε/R (Ohm's Law)).

With any time remaining in the period, we'll start working homework below.

Presentation:  Electromagnetic Induction Presentation continued
Homework:  Practice QUIZ on Lenz's Law next class - Wednesday, May 9th!   This will not count for a grade.  You don't need to make this one up if you miss it, but you can if you want.  Read any sections in chapter 20 that seem unclear.  Do textbook chapter 20 Exercises (page 725) #1, 3, 7, 9, 13 and check answers in the back of the book.  Write down any questions you might have and bring them up at the beginning of next class.  Then do at least #11-12 of page 2 of FYP: Electromagnetism if you have not finished. The video below will help you with these two problems.  

Motional EMF