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AP Physics 2
11.8 Resistor-Capacitor (RC) Circuits
IntermediateMCQGraphicalConceptual15.8k
A schematic diagram of a DC circuit containing a battery, a switch, and two parallel branches. On the left side, a vertical wire contains a battery symbol labeled \(\mathcal{E}\) with its positive terminal at the top. Above the battery, a single open switch labeled S is shown in the upper wire. The upper and lower main wires extend horizontally to the right. A middle vertical branch contains a resistor labeled \(R\) connected in series with a capacitor labeled \(C\). A rightmost vertical branch contains a single resistor labeled \(R\). All wires form rectangular closed paths. No other labels, lines, text, or axes appear.
Parallel RC circuit schematic.
A circuit consists of an ideal battery of potential difference \(\mathcal{E}\) connected in parallel to two branches. Branch 1 contains an uncharged capacitor of capacitance \(C\) in series with a resistor of resistance \(R\). Branch 2 contains a single resistor of resistance \(R\). At time \(t = 0\), a switch in series with the battery is closed. Which of the following best describes the qualitative graph of the total current \(I(t)\) drawn from the battery as a function of time \(t\) after the switch is closed?

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