Magnetic force | Middle school physics | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/ms-physics Want to explore more? Check out the full middle school physics playlist here: https://www.youtube.com/playlist?list=PLSQl0a2vh4HC-daPugvP8kL_zuE3u_3Zr Permanent magnets and electric currents produce magnetic fields. All magnets, no matter how small, have both a north and south pole. Like poles repel each other, and opposite poles attract each other. The magnetic force is a non-contact force that does not require objects be touching in order to act. Instead, the magnetic force acts through a magnetic field. The strength of the magnetic forces two objects exert on each other depends on the strengths of the magnets, their orientations, and the distance between them. Sections: 00:00 - Intro 00:23 - Can you separate north and south poles? 01:19 - Magnetic fields 02:50 - Magnetic force direction 03:14 - Strength of the magnetic force 04:28 - Electromagnets 06:33 - Summary ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc