RC--Light Bulb and Capacitor
From UO Physics Demonstration Catalog
Return to Circuits
Description:
Using Sound you can hear the effect adding a capacitor in series with a speaker. Connect a speaker to a white noise generator, for example, a stereo amplifier that has a radio FM tuner. Tune to an off station and you can hear the white noise. Hook a capacitor in series to the speaker and you will only hear the high frequencies since as frequency increases, capacitive reactance and total impedance decreases.
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