The circuit shown is used to investigate the charge and discharge of a capacitor. The supply has negligible internal resistance. When the switch is moved to position \(2\), electrons move from the ...
We’re talking of course about the air-dielectric variable capacitor, the tuning element for millions of radio receivers back in the day but now long ago replaced by much flimsier polymer ...
The gradient of this graph is equal to the capacitance of the capacitor. \(C= \frac{Q}{V}\) And the area under the graph is the energy stored by the capacitor.
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