Magnetic Fields & Circular Motion Made Easy | AP Physics 2 Exam Prep | Unit 12 Lesson 4

In this AP Physics 2 Lesson, we break down one of the most important ideas in electromagnetism:
👉 How magnetic force causes charges to move in perfect circular paths.

Using the rule F = q v × B, this lesson explains why the magnetic force is always perpendicular to velocity — turning it into a centripetal force.
You’ll learn:

✔️ Why a uniform magnetic field forces charges into circular motion
✔️ How to calculate the radius using r = m v / (q B)
✔️ Why faster particles follow larger-radius paths
✔️ How to apply the right-hand rule to determine direction
✔️ How electric fields can cancel magnetic force
✔️ Full walkthrough of AP-style magnetic force & circular motion problems

This video is perfect for:
• AP Physics 2 students
• AP Physics C E&M students
• Anyone learning electromagnetism, magnetic force, or mass spectrometry

If you want to finally understand circular motion in magnetic fields, this lesson will make everything crystal clear.

👉 If you’re looking for more practice questions, guided help with multiple-choice problems, or structured support, we do offer program options.

These include:
Additional AP-style practice problems
Guided problem-solving sessions
Office hours where I answer student questions live
Support for AP Physics and AP Calculus

🎓Visit here: https://info.bothellstemcoach.com/ap-support-youtube
Chapters
00:00 Intro – Why Charges Move in Circular Paths in Magnetic Fields?
00:25 How Magnetic Force Becomes Centripetal Force
01:40 Example 1
05:04 Example 2
09:38 Outro

If you want to learn more about the resources we offer, you can check them out at:

https://www.bothellstemcoach.com/ap-physics-1
https://www.bothellstemcoach.com/ap-calculus-ab
https://www.bothellstemcoach.com/ap-physics-2
https://www.bothellstemcoach.com/ap-physics-c

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Видео Magnetic Fields & Circular Motion Made Easy | AP Physics 2 Exam Prep | Unit 12 Lesson 4 канала Allen Tsao The STEM Coach