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A magnetized needle of the magnetic moment 20 JT-1 is placed at 60o with the direction of the uniform magnetic field of magnitude 9 T. What is the torque acting on the needle?

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A bar magnet refers to a magnet with a bar shape and magnetic poles at both ends.


A magnetized needle of the magnetic moment 20 JT<sup>-1</sup> is placed at 60<sup>o</sup> with the direction of the uniform magnetic field of magnitude 9 T. What is the torque acting on the needle?






 
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