Magnetic force (between parallel conductors)
Description
In magnetostatics, the force of attraction or repulsion between two current-carrying wires is often called Ampère’s force law. The physical origin of this force is that each wire generates a magnetic field, as defined by the Biot–Savart law, and the other wire experiences a magnetic force as a consequence, as defined by the Lorentz force. The force per unit length between two straight parallel conductors is related to the direct currents carried by the wires and the distance that separates the wires.
Related formulasVariables
Fm | Magnetic force per unit length (N/m) |
μ0 | magnetic constant |
I1 | Current of the wire 1 (A) |
I2 | Current of the wire 2 (A) |
π | pi |
r | Distance between the wires (m) |