PURPOSE: To demonstrate the voltage/charge/capacitance relationships in series and parallel capacitor circuits.
DESCRIPTION: A commercial bank of four identical capacitors can be connected in various series and/or parallel combinations and charged using an attached battery. The digital voltmeter is used to probe the voltage on any individual or group of capacitors and displayed for the class using a TV camera and video projector in the lecture halls (monitor in smaller classrooms).
REFERENCES: (PIRA 5C30.42) See Demonstration Reference File for argument over how capacitors really work.
EQUIPMENT: Demonstration capacitor bank with mounted charging capacitor, wires, digital voltmeter, and TV camera with monitor or projector.
SETUP TIME: 5 min.
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