- Electric Fields And Potential
- Current and Resistance
- Electromotive Force And Current
- DC Circuits
- Magnetic Materials
- Complex Circuits
- Semiconductors And Tubes
- Transmission Lines and Antennas
To show that v/I = constant = R.
Connect power supply to circuit. Vary the voltage to show that the voltage/current ratio is constant.
Various modifications of the set up are available
Use a diode to demonstrate one way current flow with DC power supply.Current limiter might be required.
Connect a MOSFET transistor in series with a current limiting resistor (100 Ohms) with the Drain connected to the + and the Source to the ground. Simply touch the Gate of the MOSFET with your finger to create a tiny amount of excess charge on the Gate to have the current flow.
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- Connecting Wires
- Hewlett Packard 0-12 V.D.C. power supply
- Overhead Projection Circuit