This is not easy explanation. I don't how much is long. I would say it's long like the time that currents flows through it.This is a shell, right (something like a very thin funnel)? So, at any given height, all of the current is passing through a ring. How long is that ring?
This makes no sense whatsoever.This is not easy explanation. I don't how much is long. I would say it's long like the time that currents flows through it.
It will be I/AreaThis makes no sense whatsoever.
What is the surface current density (which would be expressed in amperes per inch) if the current is flowing lengthwise through a cylinder that has a diameter of two inches?
But I don't understand why is there tan?No, because it is not asking for current density, it is asking for surface current density. So it is I/Length.
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