This video clears up a lot of the confusion I had in past videos. It seems like it would make sense to be taught these principles along with unit 1 and electrostatics, but maybe that's just me.
For the last explanation using gauss's law, can we use something other than the cylinder? I'm pretty sure sphere won't work because the area won't be canceled out
Your absolutely correct about a sphere not working because E and dA for a sphere are at all sorts of angles. Sometimes people will use a small cube, half inside and half outside the conductor. It has the same arguments as a cylinder. The E and dA are either perpendicular or parallel depending on one side of the cube you are looking at.
this guy draws amazing circles
This video clears up a lot of the confusion I had in past videos. It seems like it would make sense to be taught these principles along with unit 1 and electrostatics, but maybe that's just me.
Best professor in the world , Lucky students
Thanks, all your videos are helpful. they make the complicated subject very simple
this guy is a legend
thanks man! i appreciate it.
For the last explanation using gauss's law, can we use something other than the cylinder? I'm pretty sure sphere won't work because the area won't be canceled out
Your absolutely correct about a sphere not working because E and dA for a sphere are at all sorts of angles. Sometimes people will use a small cube, half inside and half outside the conductor. It has the same arguments as a cylinder. The E and dA are either perpendicular or parallel depending on one side of the cube you are looking at.
shouldnt the cylinder be parallel to the line charge rather than perpendicular?
video 7:21
No because the value of E won't be constant throughout the surface that is the side of the cylinder