What is Biot Savart Law？
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China
The Biot-Savart Law is employed to determine the magnetic field intensity dH near a current-carrying conductor. In other words, it describes the relationship between the magnetic field intensity generated by a source current element. This law was formulated in 1820 by Jean-Baptiste Biot and Félix Savart. For a straight wire, the direction of the magnetic field adheres to the right-hand rule. The Biot-Savart Law is also referred to as Laplace’s law or Ampère’s law.
Consider a wire carrying an electric current I and also consider an infinitely small length of a wire dl at a distance x from point A.
where k is constant and depends on the magnetic properties of the medium.
- µ0 = absolute permeability of air or vacuum and its value is 4 x 10-7 Wb/A-m
- µr= relative permeability of the medium.
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