Describe how current, potential difference, batteries, wires, and circuit elements interact to determine the behavior of a simple electric circuit.
The plates of a certain variable capacitor have an adjustable area. An experiment is performed to study the potential difference across the capacitor as it discharges through a resistor. A circuit is to be constructed with the following available equipment: a single ideal battery of potential difference , a single voltmeter, a single resistor of resistance R, a single uncharged variable capacitor set to capacitance C, and one or more switches as needed.
Using the symbols shown, draw a schematic diagram of a circuit that can charge the capacitor and may also be used to study the potential difference across the capacitor as it discharges through the resistor.
The capacitor is fully charged by the battery. At time t=0, the capacitor starts discharging through the resistor.
