A Magnetic Field Is The Magnetic Effect 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 Field.[Nb 1] The Term Is Used For Two Distinct But Closely Related Fields Denoted By The Symbols B And H, Where H Is Measured In Units Of Amperes Per Meter (Symbol: Aâ·m−1 Or A/M) In The Si. B Is Measured In Teslas (Symbol:t) And Newtons Per Meter Per Ampere

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