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Parts for this demonstration are found in the [:ElectrostaticsCabinet:Electrostatics Cabinet], A4 Parts for this demonstration are found in the [[ElectrostaticsCabinet|Electrostatics Cabinet]], A4
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Charging and Discharging Capacitors 5C30.30


Parts for this demonstration are found in the Electrostatics Cabinet, A4

A 9V battery is used to charge a capacitor. The brightness of a light bulb tracks the flow of current. When a switch is thrown, the capacitor discharges through another light bulb.

The demonstration should be stored with the switch closed so that the battery is open-circuited and the capacitor is close-circuited through the light bulb.

Discussion: the time is takes a bulb to dim is the characteristic time (RC time) of the circuit in which it is placed.




fw: ChargeDischargeBulb (last edited 2013-07-12 18:18:21 by localhost)