How to get mechanical work from a capacitor and two batteries

E. N. Miranda

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arXiv · 1209.6301

How to get mechanical work from a capacitor and two batteries

E. N. Miranda

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Abstract

The work done by a parallel plate capacitor is evaluated when the plate separation is changed. Two cases are considered: 1) the capacitor has a constant charge; 2) the capacitor is at constant voltage. The net work is calculated when the device follows a closed cycle in the charge-voltage space. For certain conditions a net mechanical work can be obtained from the cycling capacitor. The analysis is simple enough to be explained in a general physics course.

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E. N. Miranda. 2012-08-10. How to get mechanical work from a capacitor and two batteries. https://arxiv.org/abs/1209.6301

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