
High-Ampere Magnetism!
High school
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Science Project Description

There are a number of science museum exhibits which require many tens of
amperes of electric current in a thick cable to generate strong magnetism.
One example is a raft of compasses with a 200-amp cable running through
the center of the raft. Or, three 100-amp cables with three-phase AC
powering them, where the resulting field rotates and can spin a conductive
object by induction.
Rather than trying to build a 2-volt, 200 ampere supply, there is an
easier way.