Скачать или смотреть Magnetic Forces (Parts 1 & 2) -General College Physics II - Lecture 24

In this lecture we examine how magnetic fields exert forces on moving charges and current-carrying wires. Unlike electric forces, magnetic forces act only on charges in motion and are always perpendicular to both the velocity of the charge and the magnetic field. This leads to distinctive physical behavior, including circular motion and helical trajectories in uniform magnetic fields.

We extend these ideas to forces on current-carrying conductors and introduce the right-hand rule as a practical tool for determining force directions. Applications include the operation of electric motors and the deflection of charged particles in magnetic fields. This lecture deepens the symmetry between electric and magnetic phenomena and prepares us for electromagnetic induction in the upcoming section.

Resources
• Course Home Page: https://www.darinulness.com/teaching/...
• Full Course Notes (PDF): https://drive.google.com/file/d/1oXPW...
• Playlist: • General College Physics 2

Suggested Textbook
Knight, R.D., Jones, B., & Field, S. College Physics: A Strategic Approach (4th Edition). Pearson, 2019.
Any non-calculus-based college physics textbook provides a helpful supplement.