Revision 1 as of 2008-06-20 20:26:38
converted to 1.6 markup
|Deletions are marked like this.||Additions are marked like this.|
|Line 4:||Line 4:|
|Line 6:||Line 6:|
|Parts for this demonstration are found in the [:ElectrostaticsCabinet:Electrostatics Cabinet], A4||Parts for this demonstration are found in the [[ElectrostaticsCabinet|Electrostatics Cabinet]], A4|
|Line 15:||Line 15:|
|Line 17:||Line 17:|
|Line 19:||Line 19:|
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.