Difference between biot savart law and …
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Sia ? 4 years, 5 months ago
In the context of introductory Electromagnetic theory, you can use Ampere's law when the symmetry of the problem permits i.e. when the magnetic field around an 'Amperian loop' is constant. eg: to find the magnetic field from infinite straight current carrying wire at some radial distance.
Biot-Savart law is the more brute force approach, you evaluate this integral when there is not enough symmetry to use Ampere's law. eg: to evaluate the magnetic field at some point along the axis of a current loop.
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