1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Coil, magnet, EMF

  1. Jan 12, 2016 #1
    Exactly what and how generate EMF in a coil when I move a bar magnet in it? How the changing magnetic field makes electrons to move? (I mean quantum mechanically.)
    As I read somewhere when I close the circuit (put a load, a LED for example on the coil) the generated current in the coil will be "curled" but what does it mean visually? Electrons go around and around in a small circle path? How far these electrons can move in the wire at all?
    How can I calculate the wattage what I can generate, what is the equation? (wire diameter, turn on the coil, strength of the magnet (the B field), velocity of the magnet, angel between the coil and the magnetic field...)
  2. jcsd
  3. Jan 17, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook