This paper describes a physics laboratory activity aimed to illustrate Faraday's law in a hands-on fashion. By winding two coils of copper wire on a pen, students can construct a transformer in a short time. The induced emf in the secondary coil is observed as a function of the primary current for different waveforms. I describe how the device is constructed and show the experimental results obtained with the device.
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PAPERS| April 01 2005
Eduardo E. Rodríguez; Hands-on Experiments on Faraday's Law. Phys. Teach. 1 April 2005; 43 (4): 228–230. https://doi.org/10.1119/1.1888083
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