Goals■To overview electromagnetic induction and Faraday’s Law.■To observe examples of Lenz’s Law.■To study motional electromotive force.■To understand eddy currents.■To study and calculate mutual and self inductance.■To understand and calculate the action of transformers.■To study and calculate magnetic field energy.■To study R-L and L-C circuits.
Induction ExperimentsDoes the field induce a current or not? Induced emf and induced current“relative motion”of the magnet and coil induces emf and current in the coil circuit. If the coil circuit were open, there would be no induced current. However, an emf would still be induced in the coil, whether the current exists or not. The phenomenon of producing an induced emf with the aid of a magnetic field is called electromagnetic induction.
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