AP Physics C: Electricity and Magnetism · Free-response questions 2025

4 questions, each with its course unit and the official scoring guidelines.

Official paper (PDF) · QuestionsAll AP Physics C: E&M papers→

Question 2

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Question 2 — 2. A rotating, circular, conducting loop of area A and resistance R is in an external uniform magnetic field of magnitude B that is directed in the direction z- - . At time t 0 = , the magnetic field is perpendicular to…

Source: College Board — AP Physics C: Electricity and Magnetism, Free-response questions, 2025

Question 3

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Question 3 — 3. In Experiment 1, students are asked to use a graph to determine the resistivity 1 t of a circuit element that is connected to a variable power supply, as shown in Figure 1. The circuit element is cylindrical and has…

Source: College Board — AP Physics C: Electricity and Magnetism, Free-response questions, 2025

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