Contents
Cal Poly Pomona
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Physics Demonstrations at Cal Poly Pomona

Demo Index:
    EM-C-RC
Pira Index:
    5C 30.30
Title:
    RC CIRCUIT
Description:
    Demonstrates the time constant of an RC circuit.
Equipment:
    1. Capacitive circuit
    2. Edison cell battery
    3. 2 BA leads
Procedure:
    1. Connect battery to capacitive circuit.
    2. Charging the capacitor through R1: Switch S1 - position A, Switch S2 - position A. Watch the light (R1)and time it. This is the time it took for the capacitor to charge.
    3. To discharge the capacitor through R1: Switch S1 to position B. Notice the discharge across the light bulb is equal to charge time.
    4. Charging the capacitor through R2: S1 - Position A, S2 -Position B
    5. Repeat steps 2 & 3. Compare the charge and discharge times through R1 & R2.