What are the three magnetic materials?
There are three elemental metals that are magnetic: Iron. Cobalt. Nickel. What is the magnetic field formula? B = μ 0 I 2 π r In the equation, µ0 is a special constant known as the permeability of free space(µ0=4π×10-7 T⋅ m/A). Materials with higher permeability possess the ability to concentrate on magnetic fields. The … Read more