# How to calculate the magnetic field and pull force generated by current?!

by Momento
Tags: current, field, force, generated, magnetic, pull
 P: 172 The strength of the magnetic field around a long, straight wire is: $\Large B=\frac{μ_{0}I}{2\pi r}$ B is the magnetic field in Tesla, μ0 is the permeability constant (1.26*10-6 T m/A), I is current in Amps, and r is distance from the wire in meters. The direction of the field is given by the following "right-hand rule": When you want to calculate for a wire that's not perfectly straight, this equation isn't valid, and you must use integration to account for an odd-shaped wire.
 Quote by Nessdude14 The strength of the magnetic field around a long, straight wire is: $\Large B=\frac{μ_{0}I}{2\pi r}$ B is the magnetic field in Tesla, μ0 is the permeability constant (1.26*10-6 T m/A), I is current in Amps, and r is distance from the wire in meters. The direction of the field is given by the following "right-hand rule": When you want to calculate for a wire that's not perfectly straight, this equation isn't valid, and you must use integration to account for an odd-shaped wire.