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A flat, 172-turn, current‑carrying loop is immersed in a uniform magnetic field. The area of the...

A flat, 172-turn, current‑carrying loop is immersed in a uniform magnetic field. The area of the loop is 6.55 cm2 and the angle between its magnetic dipole moment and the field is 30.5∘. Find the strength B of the magnetic field that causes a torque of 1.23×10−5 N⋅m to act on the loop when a current of 2.73 mA flows in it.

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