Biot–Savart law

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A result in electromagnetism that states that the magnetic flux density B of a magnetic field produced by a current I in a long straight conductor is directly proportional to I and inversely proportional to the perpendicular distance r from the conductor. This law was discovered empirically in 1820 by the French physicists Jean Baptiste Biot (1774–1862) and Felix Savart (1791–1841). It can be derived from Ampère's law.

Subjects: Physics.

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