Day 95: Peer Instruction for Electromagnetic Induction

Today, we spent the entire class period doing peer instruction for electromagnetic induction questions. Properly applying the right-hand rules, Lenz’s Law, and constructing the long chains of reasoning necessary to answer these questions requires a lot of practice. The cumulating question was the following from Knight’s College Physics:

Screen Shot 2015-01-28 at 6.58.52 AM

Initially students really struggled to capture this relationship. Only one student sketched the correct graph. Most sketched something along these lines:


After some guiding questions from me and discussions with their peers, several groups produced the proper sketch:

Screen Shot 2015-01-26 at 8.35.10 AM

Definitely one of the more challenging questions we’ve discussed!

&nbsp ##magnetism ##peerinstruction  

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