Effects of changing a D.C. voltage in a series RC circuit.

Effects of changing a D.C. voltage in a series RC circuit. On the back of this RC board is a potentiometer that can vary the voltage V1 across the series RC circuit quickly from 0 to 12 volts D.C. Voltmeter V2 swings to show voltage fluctuations across R when V1 is varied. A switch on the back will short the capacitor removing it from the circuit. This way you can make direct comparisons about the effect of the capacitor on a circuit. Without the capacitor, variations in V2 match variations in V1. With the capacitor in the circuit, V2 follows V1 but will lag noticeably. CAPACITANCE.