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A circular loop of wire having a radius ...

A circular loop of wire having a radius of `8.0 cm` carries a current of `0.20 A`. A vector of unit length and parallel to the dipole moment W of the loop is given by `0.60 hati-0.80 hatj` . if the loop located in uniform magnetic field given by `B= (0.25 T)hati+ (0.30 T)hatk` find,
(a) the torque on the loop and
(b) the magnetic potential energy of the loop.

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