Calculate the moment of couple required to keep a bar magnet of magnetic moment 2 × 102 Am2 in a uniform field of induction 0.36 T at an angle of 300 with the direction of uniform field.

τ=MBsin⁡θ;τ=2×102×0.36×12=36N−m

Calculate the moment of couple required to keep a bar magnet of magnetic moment 2 × 102 Am2 in a uniform field of induction 0.36 T at an angle of 300 with the direction of uniform field.

τ=MBsin⁡θ;τ=2×102×0.36×12=36N−m

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Calculate the moment of couple required to keep a bar magnet of magnetic moment 2 × 10² Am² in a uniform field of induction 0.36 T at an angle of 30⁰ with the direction of uniform field.

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7.2 Nm

3.6 Nm

36 Nm

72 Nm

answer is A.

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$τ = MBsin θ; τ = 2 \times 10^{2} \times 0 .36 \times \frac{1}{2} = 36 N - m$

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Calculate the moment of couple required to keep a bar magnet of magnetic moment 2 × 102 Am2 in a uniform field of induction 0.36 T at an angle of 300 with the direction of uniform field.

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Calculate the moment of couple required to keep a bar magnet of magnetic moment 2 × 10² Am² in a uniform field of induction 0.36 T at an angle of 30⁰ with the direction of uniform field.