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Physics, 03.01.2020 19:31 MK100

Which of the following choices of path allow you to use ampère's law to find vector b(r)?
a) the path must pass through the point r .
b) the path must have enough symmetry so that b(r)*dl is constant along large parts of it.
c) the path must be a circle.

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Which of the following choices of path allow you to use ampère's law to find vector b(r)?
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