- #1

EddieP

- 13

- 0

I can calculate that B = (μ0*I)/(2*pi*r) Where I equal current in Amperes, and r equals distance from the wire in meters.

This gives me the magnetic field a certain distance from the current carrying wire, but what if there is a ferrous object near the wire? How can I use the above formula to calculate the field around a wire, if the wire is near a piece of iron with a relative permeability of say 100?