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