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AP Physics 2
11.8 Resistor-Capacitor (RC) Circuits
IntermediateMCQConceptual14.1k
A single-loop series circuit schematic containing an ideal battery labeled \(\mathcal{E}\) on the left vertical branch, an open switch on the top horizontal branch, a resistor labeled \(R\) on the right vertical branch, and an uncharged parallel-plate capacitor labeled \(C\) on the bottom horizontal branch. Simple rectangular loop formed by conducting wires. No other labels, lines, text, or axes appear.
Series RC circuit with an open switch, resistor, and capacitor.
An uncharged parallel-plate capacitor of capacitance \(C\) is connected in series with a resistor of resistance \(R\) and an ideal battery of potential difference \(\mathcal{E}\). When the switch is closed, the potential difference \(V_C\) across the capacitor begins to increase, but the rate of potential change \(\dfrac{dV_C}{dt}\) continuously decreases over time. Which of the following best explains why this rate of potential change decreases as the capacitor charges?

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