Uploaded by Nathan Romano on October 19, 2019 at 3:34 pm
Magnetism 11: Lorentz Force Angle Classes
Some angles are repulsion, attraction and no effect. These are segments of positive current flow. You apply the "fingers, thumb, palm" flux/current/direction rule, to verify that I correctly identified those angles as attraction, repulsion or neutral. That is fingers in direction of flux lines, thumb in direction of current and then palm points in direction of deflection.
Watch my video #2 in this series if you need a refresher regarding repulsion/attraction of two current flows in two wires: http://www.youtube.com/watch?v=-IL6HqIX1hg My "angle classes" is pretending the wires can float freely in space.
Edit: I had a new idea this apparent right angle Lorentz force can be described as the sum of two attraction/repulsion vectors.
I am studying this lecture to see if I can master dipole charge mathematics and adapt it to describe Lorentz force: Lec 4 | MIT 8.02 Electricity and Magnetism, Spring 2002
The important part, to me, is summarised at 8:00.
This Yale professor is great, too:
(3. Gauss's Law I )
He describes dipole forces there, too. minute 9:00
Dec 2017: I think 3:27 is correct. The flux is a cylinder although the magnitude calculation is biot-savart spherical 1/radius-squared.