The coil in a loudspeaker has 40 turns and a radius of 39
The coil in a loudspeaker has 40 turns and a radius of 3.9 cm. The magnetic field is perpendicular to the wires in the coil and has a magnitude of 0.30 T. If the current in the coil is 270 mA, what is the total force on the coil?
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