# Magnetic Force between Parallel Conductors

Written by Jerry Ratzlaff on . Posted in Electromagnetism

Each wire creates a magnetic field around the wire.  The force between the two wires is related to the current of the wires and the distance between the wires.

### Magnetic Force between Parallel Conductors Formula

$$\large{ F_m = \frac { \mu_o I_1 I_2 } { 2 \pi d } }$$

Where:

$$\large{ F_m }$$ = magnetic force

$$\large{ d }$$ = distance between the wires

$$\large{ I_1 }$$ = wire current (amp) 1

$$\large{ I_2 }$$ = wire current (amp) 2

$$\large{ \pi }$$ = PI

$$\large{ \mu_o }$$  (Greek symbol mu) = magnetic constant