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Pole strength of a bar magnet …

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Pole strength of a bar magnet depends on its area,but the unit of area is not included in the unit of pole strength(Am).Why?

    • Posted by Rohit Krishna 5 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Khushi....? ??‍? 5 years, 3 months ago

    Since the formula of magnetic moment is M=IA and its unit is Am^2 and the formula of pole strength is m=M/2L hence its correct formula is m=IA/2L the unit of L is m and unit of A is m^2 hence Area is present in the unit but it is cancelled due to division by the length...Pole strength is given by m=M/2l. Unit of magnetic dipole moment is Am^2 Therefore, unit of pole strength will be Am

    3Thank You

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