A rectangular wire loop with a cross sectional area of 0 20
A rectangular wire loop with a cross-sectional area of 0.20 m2 carries a current of 0.25 A. The loop is free to rotate about an axis that is perpendicular to a uniform magnetic field with strength 0.30 T. The plane of the loop is at an angle of to the direction of the magnetic field.
(a) What is the magnitude of the torque on the loop?
(b) How would you change the magnetic field to double the magnitude of the torque in part (a)?
(c) How could you change only the current to double the torque in part (a)?
(d) If you wanted to double the torque by changing only the loop area, what would the new area have to be?
(e) Could you double the torque in part (a) by changing only the angle?
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