How to Choose and Prepare for the Four AP Physics Exams: A Complete Guide to Physics 1, 2, C: Mechanics, and C: Electricity and Magnetism

There are four AP Physics exams: Physics 1, Physics 2, Physics C: Mechanics, and Physics C: Electricity and Magnetism. Many parents are confused at first: which one should I take? Is Physics C more "advanced" than Physics 1, so I should just take C? Actually, the difference among these four is not about difficulty, but whether they use calculus and what topics they cover. Choosing the right one saves time and effort; choosing the wrong one might mean an extra year of unnecessary study.

Based on the College Board's official descriptions of the four courses, this article explains how to choose, how to prepare, and what changes are coming in 2027. For AP scoring and overall strategies for getting a 5, see our article on How to Get a 5 on AP Exams; for registration, fees, and test dates, see AP Course Selection and Test Scheduling.

1. Differences Among the Four Courses

The table reveals two distinct tracks:

• Algebra Track: Physics 1 → Physics 2. Broad coverage from mechanics to thermodynamics, optics, and modern physics, using only algebra and trigonometry.
• Calculus Track: Physics C: Mechanics → Physics C: Electricity and Magnetism. Narrower scope, but requires calculus for derivations and calculations.

2. How to Choose

Here are some practical recommendations:

• Students planning to major in STEM (physics, engineering, computer science, etc.) with strong math skills: Prioritize Physics C. It corresponds to the calculus-based physics taken by STEM majors in college and better demonstrates your abilities. The prerequisite is keeping up with calculus; ideally, take AP Calculus BC or AB concurrently (see How to Prepare for AP Calculus).
• Students who haven't reached calculus yet or want to build a solid foundation first: Start with Physics 1. Its mechanics section highly overlaps with Physics C: Mechanics in unit structure, making it an excellent stepping stone.
• Students not pursuing STEM but wanting to demonstrate science proficiency: Physics 1 or Physics 2 is sufficient.
• Physics C: Mechanics and Physics C: Electricity and Magnetism are two separate exams. You can take just Mechanics. The College Board recommends taking Mechanics before Electricity and Magnetism.

Which exam earns college credit depends on your target university's policy. You can check the College Board's credit policy search page (see Article 118).

3. Exam Format for All Four Courses: Exactly the Same

The exam structure for all four Physics courses is the same (starting from the May 2027 exams):

• Changes for 2027: Official corrections state that the multiple-choice section increases from 40 to 42 questions, and time increases from 80 to 85 minutes; the free-response section time decreases from 100 to 95 minutes. Therefore, when using 2025 or 2026 practice materials, be mindful of the different time limits.
• Hybrid Digital Testing: Multiple-choice questions are answered on Bluebook; free-response questions are viewed on Bluebook, but answers are handwritten in a paper booklet.
• Calculators are allowed for the entire exam (must comply with the AP calculator policy).
• A formula sheet is provided, available in paper format on test day and also within Bluebook.

4. Four Free-Response Questions, Four Types

For each Physics exam, the 4 free-response questions are officially designated as one of the following types:

1. Mathematical routines;
2. Translation between representations: e.g., translating between free-body diagrams, graphs, and equations;
3. Experimental design and analysis;
4. Qualitative/quantitative translation: corroborating verbal reasoning with mathematical calculations.

These four question types correspond to the three skills officially listed: representing physical phenomena visually, performing derivations and calculations, and describing experimental procedures and analyzing data to support conclusions. For Chinese students, types 2, 3, and 4 are often the most unfamiliar: domestic physics exams focus heavily on calculations, whereas AP free-response questions require you to draw diagrams, design experiments, and explain in words (practical recommendation).

Practice Strategies (Practical Recommendations):

• Experimental design questions: Practice clearly stating what to measure, which instruments to use, how to control variables, and how to use graphs (e.g., linearizing data to find the slope) to draw conclusions.
• Verbal explanation questions: Use complete English sentences to explain cause and effect, rather than just writing equations.
• Refer to official scoring guidelines: Grade your own answers using the scoring guidelines for past free-response questions on AP Central to see exactly where each point is awarded. This is the same practice method used for Calculus.
• Practice handwriting: Since free-response answers are handwritten in the booklet, practice writing out complete solutions on paper regularly.

5. Weight of Each Unit in the Multiple-Choice Section

The official website provides the weight range for each unit in the multiple-choice section. Taking Physics C: Mechanics as an example:

Physics 1 has an additional "Fluids" unit (10%–15%), while the "Energy and Momentum of Rotating Systems" and "Oscillations" units each account for only 5%–8%. In the six units of Physics C: Electricity and Magnetism, "Electrostatics and Gauss's Law" and "Electric Circuits" each account for 15%–25%. The weights for the seven units in Physics 2 are relatively even, each ranging between 12% and 18%.

Rotation is a relatively unfamiliar topic for Chinese students: domestic high school physics covers rigid body rotation (torque, moment of inertia, angular momentum) very little, whereas it is a standalone unit in both Physics 1 and Physics C: Mechanics and requires dedicated study (practical recommendation).

6. Percentage of Students Scoring a 5

According to the 2026 score distribution published by the College Board:

The percentage of students scoring a 5 in Physics C is not lower than in Physics 1. One reason might be that students who choose Physics C generally have stronger math and physics foundations, so it cannot be simply concluded that "C is easier".

7. 2027 Exam Dates

• Physics C: Mechanics: Monday, May 3, 2027, 1st administration;
• Physics 1 and Physics C: Electricity and Magnetism: Wednesday, May 5, 2027, 2nd administration, both at the same time;
• Physics 2: Thursday, May 6, 2027, 1st administration.

If you want to take both exams scheduled at the same time, you must arrange a late testing session according to the official conflict resolution policy (see Article 118).

Conclusion

Choosing the right AP Physics exam depends primarily on your current math level and intended college major. The exam format is identical for all four courses, and the key to scoring a 5 is the same: clear conceptual understanding for the multiple-choice section, and the ability to draw diagrams, design experiments, and explain verbally for the free-response section, while writing out complete solutions according to the official scoring guidelines.

If you need help planning your AP courses based on your intended major, or if you need AP Physics tutoring, feel free to chat with our instructors.

Verification Note: This article was verified against the College Board website in September 2026. Course content for the four courses, corresponding college courses, official recommended prerequisites, units and their weight in the multiple-choice section, and the three skills are sourced from the AP Students course pages (the Physics 2 page notes the weight as a percentage of the "exam score"); exam structure, hybrid digital exam format, calculator policies, formula sheets, the four free-response question types, and 2027 exam dates are from the AP Central exam pages for each course; the 2027 changes to multiple-choice and free-response timing are from the AP Central clarifications and corrections document for the AP Physics 1 and AP Physics C: Mechanics course descriptions (the exam pages for Physics 2 and Physics C: Electricity and Magnetism show the same new structure); score distributions are from the AP Students 2026 AP Score Distributions page. Course selection advice, free-response practice strategies, reminders about the Rotating Units, and our interpretation of the 5-score percentages are based on our professional experience.

References:

• AP Central: AP Physics 1 Exam
• AP Central: AP Physics C: Mechanics Exam
• AP Central: AP Physics 1 Clarifications and Corrections (PDF)
• AP Students: AP Physics 1
• AP Students: AP Physics 2
• AP Students: AP Physics C: Mechanics
• AP Students: AP Physics C: Electricity and Magnetism
• AP Students: 2026 AP Score Distributions