Ampere in his experiments on magnetic field due to electric current found that the sum of dot product of magnetic field and path length for any continuous closed path is equal to the product of permeability and current inside the path. He stated the above observation as a general law known as Ampere's circuital law.
According to ampere's law the line integral of magnetic field along any closed path is equal to muzero times the current enclosed by the path. Amperes circuital law is not different from Biot-Savart law. Both relates the magnetic field the current and both express the same physical consequence of electric current.
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| Magnetic Field due to a circular coil |
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| Applications of Ampere's Circuital Law |
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