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This demonstration clearly shows the energy stored in a capacitor. A large capacitor is initially charged, then discharged through a resistor causing it to pop and spark.
Setup:
Place the power supply and grounding plate apparatus on the lab table with the capacitor on the metal grounding plate.
The first terminal (closest to the switch) on the grounding plate should be connected to the right side (G) of the switch.
Connect the second terminal to the ground of the power supply.
Connect the third terminal to the (-) of the power supply.
The fourth terminal should be taped to the grounding plate.
The fifth terminal should be connected to the (-) side of the capacitor.
The sixth terminal should be taped to the grounding plate.
The left side of the switch (PS) should be connected to the (+) of the power supply.
Connect the center of the switch (C) to the (+) side of the capacitor via a resistor mounted to a yellow banana plug.
Once everything is properly connected, make sure the switch is to the right (G) position. Plug in the power supply and make sure the capacitor is discharged using the plastic pipe and wire between terminals.
Place the switch in the left (PS) position and turn on the power supply. Charge the capacitor up to 3 kV.
Turn off the power supply and lift the switch the center position.
Touch the switch to the right side (G) to discharge the capacitor through the resistor. There should be a pop and flash.
Use the pipe and wire between terminals to ensure the capacitor is discharged.
Notes:
Use caution to ensure that this is properly connected.
High voltages are used in this demonstration so use caution at all times.
Be sure not to touch the capacitor or parts of the system during use.
Courses Used In:
PHYS 10320
PHYS 20435
PHYS 30220
Discussion and Polling Questions:
Coming Soon
Equipment Needed:
kV Power Supply
0.5MFD Capacitor
Grounding Plate Apparatus
Banana Plugs with Mounted Resistors (Resistors should be in the 10-20 Ohm range)
Plastic Pipe for Discharging
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