Names: __________________________________________________________________

You must include on attached pieces of paper all measurements, tables, and calculations you have made during the experiment. Measurements must have units and uncertainties (where possible). You must hand in all graphs with this report. All graphs must be made by hand, on graph paper.

1. Use the graph of current vs. voltage for the resistor + ammeter in series to calculate the resistance of the pair. Write here the resistance, and the uncertainty in its value. Is the resistance increasing or decreasing as one moves to larger voltages? 2. Use the graph of current vs. voltage for the diode to calculate the dynamic resistance of the diode at the steep portion of the graph. Is the resistance increasing or decreasing as one moves to larger voltages? 3. Use the graph of current vs. voltage for the light bulb to calculate the dynamic resistance of the bulb at a voltage of 5 Volts. Is the resistance increasing or decreasing as one moves to larger voltages?

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