DrZoidberg
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What happens when you try to create a ring shaped magnet with a circular magnetisation.
e.g. you take an unmagnetised steel ring, wind some copper wire around it, turn on the current for a few seconds and then remove the wire. Afterwards there should be a circular magnetic field inside the ring right? Will there be any field outside?
e.g. you take an unmagnetised steel ring, wind some copper wire around it, turn on the current for a few seconds and then remove the wire. Afterwards there should be a circular magnetic field inside the ring right? Will there be any field outside?