There Is Only One Type of Magnetic Field
Most recent answer: 11/26/2017
- Oliver Senior (age 65)
Although there are several ways to make a magnetic field:
Run a current through a wire.
Magnetize a piece of iron.
Create a time-varying electric field.
They all produce the same "type" of magnetic field. That is, unless you look at the source, there is no way to tell them apart.
As you move farther from the source, the field becomes weaker. Again, unless you look, you cannot tell if you are close to a weak source or far from a strong source.
(published on 11/26/2017)