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AP Physics C: E&M
13.5 Circuits with Resistors and Inductors (LR Circuits)
IntermediateMCQGraphicalMathematicalConceptual23.9k
A rectangular circuit schematic oriented horizontally. On the left vertical wire segment is an ideal battery of electromotive force labeled \(\mathcal{E}\), with its longer positive plate on top and shorter negative plate on bottom. Along the top horizontal wire segment is an open single-pole single-throw switch labeled \(S\), shown tilted upward. Along the right vertical wire segment is a zigzag resistor symbol labeled \(R\). Along the bottom horizontal wire segment is an inductor symbol composed of four adjacent semicircular loops facing upward, labeled \(L\). Straight solid wire segments connect these elements into a single rectangular loop with an open gap at switch \(S\). No other labels, lines, text, or axes appear.
Circuit schematic with battery, switch, resistor, and inductor
A circuit contains an ideal battery of electromotive force \(\mathcal{E}\), an open switch \(S\), a resistor of resistance \(R\), and an ideal inductor of inductance \(L\) connected in a single series loop. At time \(t = 0\), the switch is closed. Which of the following graphs best represents the magnitudes of the potential difference across the inductor, \(|\Delta V_L|\) (dashed curve), and across the resistor, \(|\Delta V_R|\) (solid curve), as functions of time \(t\)?

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