Question

The S.I. unit of pole strength is
(a) Am² (b) Am
(c) A m⁻¹ (d) Am⁻²

Answer 1

Answer:

SI unit of pole strength is ampere-meter ( A m ) . Is is defined as the force per unit H field, in which case the SI unit is the weber ( Wb ).

    For this question option b is correct i.e Am

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Answer 2

Answer:

In SI units, there are two possible units for magnetic pole strength, depending on how pole strength is defined. If you define it as force per unit B field, then the SI unit is the ampere-meter (A m). It can also be defined as the force per unit H field, in which case the SI unit is the weber (Wb).