A 25-Turn Square Coil Has a Side of 0 $\circ$ Angle with the Vertical When the Coil Is in Hinged

A 25-turn square coil has a side of 0.210 m,is hinged along a horizontal side and carries a 6.00-A current.When placed in a vertical magnetic field pointing down and having a magnitude of 4.00 mT,the plane of the coil makes a 2.3 ^$\circ$ angle with the vertical when the coil is in equilibrium.Determine the mass of the coil.Use g = 9.81 m/s².

A) 0.452 kg
B) 0.640 kg
C) 0.320 kg
D) 0.785 kg
E) 0.904 kg

Correct Answer:

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