AP Physics 2 Guide: Exam Format, Units & Study Tips
By Velacai · June 25, 2026 · 8 min read
AP Physics 2 at a glance
AP Physics 2: Algebra-Based is a college-level, second-year physics course covering thermodynamics, electricity and magnetism, optics, and modern physics. The May exam is about 3 hours long: 40 multiple-choice questions (80 minutes) and 4 free-response questions (100 minutes), each section worth 50% of your score. You're graded on a 1-5 scale with rights-only scoring, and a calculator plus a reference equation sheet are provided throughout.
If you took AP Physics 1, Physics 2 picks up where it left off. The math stays algebra-based (no calculus), but the concepts get more abstract: invisible fields, circuit behavior, light bending through lenses, and the strange rules of the quantum world.
What's new for 2025-26
Two updates matter:
- Fluids moved out. Starting with the May 2025 exam, fluid mechanics (buoyancy, continuity, Bernoulli's equation) shifted to AP Physics 1. Don't waste time studying fluids for the Physics 2 exam.
- A bigger redesign is coming in May 2027. The number of multiple-choice questions and section timing will change then. Everything in this guide reflects the current (2026) exam — always confirm against the latest Course and Exam Description before test day.
Exam format and structure
| Section | Questions | Time | Weight | Tools |
|---|---|---|---|---|
| I — Multiple Choice | 40 | 80 min | 50% | Calculator + equation sheet |
| II — Free Response | 4 | 100 min | 50% | Calculator + equation sheet |
| Total | 44 | ~3 hours | 100% | — |
Multiple-choice section
Forty questions in 80 minutes — about two minutes each. Some are standalone; others come in sets built around a shared diagram, graph, or data table. Scoring is rights-only: you earn a point for every correct answer and lose nothing for a wrong one, so never leave a blank. If you're stuck, eliminate what you can and guess.
Free-response section
Four questions in 100 minutes (about 25 minutes each), built around four distinct task types:
- Mathematical routines — set up and solve a multi-step quantitative problem.
- Translation between representations — convert between equations, graphs, diagrams, and words.
- Experimental design and analysis — design a procedure, identify variables, and analyze data.
- Qualitative/quantitative translation — explain a physical situation in words, then back it with math.
The four FRQs are worth different point totals (roughly 8-12 points each, 40 points total), so don't burn 40 minutes on the heaviest one and shortchange the rest.
Digital and handwritten — the hybrid format
As of May 2025, College Board moved most AP exams into the Bluebook app. For AP Physics 2 this is a hybrid setup: you answer multiple-choice and read the free-response prompts on screen, but you handwrite your FRQ solutions (equations, diagrams, and work) in a paper booklet that's collected and scored by hand. Practice writing clean, labeled physics work by hand — graders need to follow your reasoning.
Calculator and equation sheet
A calculator is permitted on both sections, and an official equation/reference sheet is provided (printed and in Bluebook). That's good news: you don't have to memorize formulas. The skill that's tested is knowing which equation applies and why — so practice selecting and justifying, not reciting.
The 7 units and their exam weights
AP Physics 2's units are numbered 9-15, continuing from the eight units of AP Physics 1. The percentages below are the approximate share of the multiple-choice section devoted to each unit. Treat them as ranges, not guarantees.
| Unit | Topic | Approx. MCQ weight |
|---|---|---|
| 9 | Thermodynamics | 15-18% |
| 10 | Electric Force, Field, and Potential | 15-18% |
| 11 | Electric Circuits | 15-18% |
| 12 | Magnetism and Electromagnetism | 12-15% |
| 13 | Geometric Optics | 12-15% |
| 14 | Waves, Sound, and Physical Optics | 12-15% |
| 15 | Modern Physics | 12-15% |
The takeaway: the exam is front-loaded toward electricity and thermo. Units 9, 10, and 11 together can be roughly half the multiple-choice section. If your time is limited, master those first.
What each unit actually covers
- Thermodynamics (9): kinetic theory, ideal gas law , the first law, heat engines, and PV diagrams.
- Electric Force, Field & Potential (10): Coulomb's law, electric fields, potential and potential energy, capacitors.
- Electric Circuits (11): Ohm's law, series vs. parallel resistors, Kirchhoff's rules, RC circuit behavior.
- Magnetism & Electromagnetism (12): magnetic fields and forces, fields from currents, Faraday's and Lenz's laws.
- Geometric Optics (13): reflection, refraction (Snell's law), and ray diagrams for mirrors and lenses.
- Waves, Sound & Physical Optics (14): interference, diffraction, double-slit, and the wave nature of light.
- Modern Physics (15): the photoelectric effect, photon energy , atomic models, and nuclear physics.
How AP Physics 2 is scored
Your raw points from both sections combine into a composite score, which College Board converts to the 1-5 AP scale:
- 5 — extremely well qualified
- 4 — well qualified
- 3 — qualified
- 2 — possibly qualified
- 1 — no recommendation
Because the two sections are each 50%, the FRQ is just as important as the multiple choice. A common mistake is to over-prepare for MCQ speed and freeze on free response. For a deeper look at how raw points map to the 1-5 scale, see our AP scoring guide, and use the AP score calculator to estimate where you stand.
College credit varies by school. Many universities award credit for a 3 or higher; selective schools often require a 4 or 5, and some don't give credit for algebra-based physics at all. Check your target colleges' specific policies.
How hard is AP Physics 2 — and how to prepare
AP Physics 2 is considered one of the more challenging AP science exams. The pass rate (scores of 3+) is typically lower than many other APs, partly because the content is abstract and the FRQs demand clear written reasoning, not just plugging into formulas.
The good news: it's very learnable with the right strategy.
Study tips that actually move your score
- Lead with electricity and thermo. Units 9-11 are the biggest weight and the best return on study time.
- Think in fields and energy, not just numbers. Many questions ask why a field, current, or image behaves a certain way. Practice explaining out loud.
- Master the FRQ task types. Do timed, full-credit FRQs by hand and compare your work to official scoring guidelines so you learn exactly what graders reward.
- Use the equation sheet early. Train with it from day one so you know where every formula lives.
- Draw everything. Ray diagrams, circuit diagrams, field lines, and free-body sketches earn points and prevent errors.
- Simulate the real thing. Practice mixed sets and full sections under time pressure, then review every miss.
That last point is where most students plateau. Velacai offers realistic AP practice with exam-style multiple-choice and free-response questions, AI grading on your written work, and a 1-5 score estimate — so you can find your weak units before May, not after. New to the AP system overall? Start with our AP Exams Explained hub and the breakdown of MCQ vs. FRQ format. When you're ready to commit, see pricing.
FAQ
Is AP Physics 2 hard?
Yes, it's one of the harder AP sciences. The concepts (fields, circuits, optics, quantum) are abstract, and the free-response section rewards clear reasoning over memorization. It's very doable, though, if you prioritize the high-weight units and practice full FRQs by hand.
What's a good score on AP Physics 2?
A 3 is passing and earns credit at many colleges. A 4 or 5 is strong and is often required at selective universities. Aim for at least a 3, and target a 4-5 if your schools demand it. Use the AP score calculator to estimate your composite.
How is AP Physics 2 scored?
Two equally weighted sections — 40 multiple-choice (50%) and 4 free-response (50%) — combine into a composite that converts to a 1-5 scale. Multiple choice is rights-only, so wrong answers cost nothing. Always fill in every bubble.
How many units are on the AP Physics 2 exam?
Seven units, numbered 9-15: Thermodynamics, Electric Force/Field/Potential, Electric Circuits, Magnetism & Electromagnetism, Geometric Optics, Waves/Sound/Physical Optics, and Modern Physics. Fluids was moved to AP Physics 1 starting in 2025.
Do I need AP Physics 1 before Physics 2?
It's strongly recommended. Physics 2 assumes you're comfortable with the mechanics, forces, and energy concepts from Physics 1, and it continues the same algebra-based approach. Some students take them back-to-back; check your school's sequence.
Can I use a calculator on AP Physics 2?
Yes — a calculator is allowed on both sections, and an official equation/reference sheet is provided. The exam tests whether you can choose and apply the right relationship, not whether you've memorized formulas.