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Unit 13: Electromagnetic Induction

Circuits with Resistors and Inductors

Analyze LR circuits just after a switch moves and long after, derive and solve the loop equation, and use the time constant L/R to find currents and times.

Topic 13.5 · 12 min read

This lesson comes with the AP Physics C: Electricity and Magnetism plan

In this lesson

  1. 01Two moments you can analyze without calculus
  2. 02The loop equation for a series LR circuit
  3. 03What the time constant tells you
  4. 04Decay: the resistor drains the inductor
  5. 05Worked examples
  6. 06Where students lose points
  7. 07On the exam

The first units’ lessons are free. The plan opens every lesson, every practice question with worked solutions, your study plan and calendar, for $14.49 a month. Cancel any time.

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