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AP Physics 2
11.8 Resistor-Capacitor (RC) Circuits
IntermediateMCQGraphicalConceptual17.9k
A circuit schematic with rectangular wire loops. On the left vertical branch is a capacitor labeled \(C\), marked with an initial potential difference \(V_0\). On the top horizontal branch is a single-pole switch labeled \(S\) shown in the open position. On the right vertical branch is a resistor labeled \(R\). The bottom horizontal wire connects the resistor back to the capacitor, forming a single closed loop when the switch is closed. No battery or other power source is present. No other labels, text, or elements appear.
Circuit schematic of the capacitor, switch, and resistor.
A capacitor of capacitance \(C\) is initially charged such that the electric potential difference between its plates is \(V_0\). At time \(t = 0\), an open switch is closed, connecting the capacitor directly in series with an ideal resistor of resistance \(R\) in a circuit containing no power source. Which of the following graphs best represents the magnitude of the potential difference across the resistor, \(V_R\), as a function of time \(t\) after the switch is closed?

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