Homework Statement
Two concentric spherical shells carrying uniformly distributed charges +Q and -Q at radii a and b, respectively (b>a). Now, they are immersed in a uniform magnetic field pointing along the z-axis. Find the angular momentum of the fields.Homework Equations
No need. (I know...
Just to clarify, it is for "meters."
Spatial units are typically denoted in m, and I'm sure you've seen x represent a spatial coordinate.
ct is also meters, because c is the speed of light and c=3*108 meters/second [m/s] except it is multiplied by time. So you have a velocity (c) times...