Fleming left hand rule: Learn how to use

Learn how to use Fleming 's left - hand rule and right- hand rule to find the direction of magnetic force, current and field in electric motors and generators. See examples, tips, FAQs and videos on magnetism and electromagnetism. Learn how to use Fleming 's left - hand rule and right- hand rule to determine the direction of force, current, and magnetic field in electromagnetism. See definitions, examples, videos, and FAQs on these rules. Fleming’s left-hand rule tells us that if we stretch our thumb, middle finger and the index finger of our left hand in mutually perpendicular (make an angle of 90 degrees) directions to each other, we can see the relation between directions of force (F), current (I), and magnetic field (B). Fleming 's left - hand rule and the Fleming 's right- hand rule are basic rules applicable in both magnetism and the electromagnetism. John Ambrose Fleming discovered them in the late 19th century as a simple way to determine the direction of motion in the electric motor or the direction of electric current in an electric generator.