PHASE RELATIONSHIP OF CURRENT AND VOLTAGE IN A CAPACITIVE CIRCUIT
(AC Circuits)

EQUIPMENT
    Demo Board with decade resistor and 3.5 mfd capacitor
    Oscilloscope with TV camera
    Audio Frequency Generator



NARRATIVE
        The current leads the voltage by 90 degrees in a capacitive circuit. Connect the capacitor and decade resistor is series with an audio frequency generator. Using a dual beam oscilloscope, display the voltage drop across the resistor (this represents the current and the voltage). The two traces on the oscilloscope will be displaced by about 90 degrees. Stray capacitance and inductance are responsible for a small phase shift.