i have a question in stokes theorem, and i am having trouble finding the
we have a curve
and our goal is to calculate the work done by the field
along the curve.
so i use stokes theorem, and pick a surface S enclosed by C:
and the normal vector N, will be in the (-j) direction.
eventually what i get is using stokes theorem:
How do i find the length and direction of the normal vector n?
thanks in advance