Please explain ...
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If you know about electromagnets, you will know that a current (flow of charge) can create a magnetic field.
In atoms, there are charges (electrons and protons) which can be thought of as spinning and (in the case of the electrons) in orbit. These spinning and rotating charges act like tiny electromagnets and produce a magnetic field.
In atoms, there are charges (electrons and protons) which can be thought of as spinning and (in the case of the electrons) in orbit. These spinning and rotating charges act like tiny electromagnets and produce a magnetic field.