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"A rectangular coil has 16 turns and sides of length a=20 cm and c=50 cm. The coil is pivoted around the y-axis and its plane is at 30 degrees to a magnetic field B=50 k T. The current is 10 A

a)Find the force on each side

b)what is the magnetic moment of the coil?

c)What is the torque on the coil? "

How do I start this problem? I really have no idea