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A magnetic field is generated when electric charge carriers such as electrons move through space or within an electrical conductor. The geometric shapes of the ...
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A magnetic field is a mathematical description of the magnetic influence of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field.[nb 1] The term is used for two distinct but closely related fields denoted by the symbols B and H, which are measured in units of tesla and amp per meter respectively in the SIB is most commonly defined in terms of the Lorentz force it exerts on moving electric charges.
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