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Mungan, Carl E. – Physics Teacher, 2014
A Genecon is an inexpensive hand-cranked dc electric generator. You can use it to charge a one-farad supercapacitor. If you stop cranking the handle, the capacitor will discharge, sending a current into the Genecon and thereby causing the handle to start turning as an electric motor. How does the current direction compare before and after you stop…
Descriptors: Demonstrations (Educational), Physics, Motion, Mechanics (Physics)