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Ampère's force law
Physical law / From Wikipedia, the free encyclopedia
This article is about Ampère's force law. For the law relating the integrated magnetic field around a closed loop to the electric current through the loop, see Ampère's circuital law.
In magnetostatics, the force of attraction or repulsion between two current-carrying wires (see first figure below) is often called Ampère's force law. The physical origin of this force is that each wire generates a magnetic field, following the Biot–Savart law, and the other wire experiences a magnetic force as a consequence, following the Lorentz force law.
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