How do I calculate magnetic flux of the shaded area on picture?

MrAl

Joined Jun 17, 2014
7,656
Hi,

If i understand you correctly it looks like you would want to integrate the B field, which would come from the curl of the magnetic potential.
Is that what you are trying to do? If so, you would have to first calculate the curl of A, then integrate that.
The magnetic potential 'rotates' around the B field.
 
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