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Al Tobias (wat4y) - Office: Rm. 201, (434) 924-0538 - Lab: Rm. 202, (434) 924-6800

Physics Demo Manual

Demonstrations are cataloged according to PIRA Bibliography


Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.

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 Electric Fields And Potential
 Current and Resistance
 Electromotive Force And Current
 DC Circuits
 Magnetic Materials
 Complex Circuits
 Parallel LCR Circuit or Tank Circuit
  video  - Series LCR Circuit, Resonance
 Coupled Electrical Oscillators
 Semiconductors And Tubes
 Transmission Lines and Antennas

Coupled Electrical Oscillators


To demonstrate damping of two coupled oscillatory systems.


Set up the circuit as shown below. Set signal generator to square wave and run through frequency ranges until resonance is found. (Resonance is the point at which the amplitude of the output is maximum.) Note the damping effect.


Use 1 .1 mf capacitor, 2 .47 mf capacitors, 1 10k 1/4W resistor and 4.25 MH air core copper coil inductor


  • Signal Generator
  • Oscilloscope
  • Alligator Clips
  • 3 Capacitor
  • 1 Resistor
  • 2 Inductor