AP Physics C: Electricity and Magnetism
Free, research-anchored AP Physics C: E&M practice. Calculus-based, all 31 topics across units 8 to 13. Every topic ships a lesson built around the specific errors students actually make, and a ten-scenario skill check where each wrong answer is one of those errors, named and corrected.
Learn
Lessons built from the mistakes
01 · Learn
Topic lessons
One per CED topic, 31 in all. Each opens on the distinction the topic actually turns on, then works the cases where students reliably go wrong, and closes with a ten-scenario skill check.
Browse the units02 · Diagnose
Topic diagnostic
Short topic-level assessments built around documented student misconceptions, routing each result to the drills that fix it. Being authored against the 114-code taxonomy the lessons already use.
Coming soon03 · Verify
Cumulative MCQ
Twenty-item per-unit exams that mirror AP Physics C format. Published once each unit's item bank is authored and seeded.
Coming soonBy unit
Jump into a unit
Why the units start at 8
The College Board treats Physics C as one framework in two halves: Mechanics is units 1 through 7, Electricity and Magnetism is units 8 through 13. The numbering here matches AP Classroom exactly, so a unit number on this site is the unit number your teacher uses. If you are looking for units 1 through 7, they are in AP Physics C: Mechanics.
Why misconception-targeted, not problem volume
Working more problems only helps if the wrong ones get corrected. This course is organised the other way around: 114 documented errors, catalogued per unit, each with the mistaken step written out and the correction beside it. Every distractor in every skill check is one of those errors producing its own number, so choosing it tells you exactly which idea to repair rather than that you missed.