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Faraday’s Law: Alternating Current

Experiment #12 from Advanced Physics with Vernier — Beyond Mechanics

Education Level
High School


The focus of the previous experiment is the induced emf in a coil produced by a magnet moving through the coil. In this experiment, you will examine the relationship between an alternating current in a primary coil and the induced emf in a secondary.


In this experiment, you will

  • Collect current vs. time and potential vs. time data for a pair of solenoids.
  • Explain how the magnetic flux through the secondary solenoid depends on the current in the primary.
  • Relate the shape of the graph of potential vs. time in the secondary to that of current vs. time in the primary.
  • Calculate the induced emf produced by alternating current in the primary and compare this to experimental findings.

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

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This experiment is #12 of Advanced Physics with Vernier — Beyond Mechanics. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

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