Many books told us current leads voltage by 90 degrees in capacitor. I know why it is 90 degrees.
But, how to show that it is true by an experiment?
It would be interesting to see a simulation of an applied voltage of 10V amplitude, 50Hz freq, 1 K resistor and 1uF capacitor.If I should setup the experiment, I would use
- isolated voltage source (a low voltage safety transformer)
- R and C (kOhm and µF range)
- two channel oscillosope with single ended probes or simply banana jack adapters
voltage is the causative factor; it is the application of a potential that causes the current. The current is determined by Ohm's law. If you consider the instantaneous charge on the capacitor as a voltage source, then Ohm's law applies at every point.Many books told us current leads voltage by 90 degrees in capacitor. I know why it is 90 degrees.
But, how to show that it is true by an experiment?
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