Posted by Antony need some help here on Saturday, November 23, 2013 at 1:03pm.
A current loop with radius 20 cm and current 2 A is in a uniform magnetic field of 0.5 T. Considering all possible orientations of the loop relative to the field, what is the largest potential energy difference (in Joules) you can find between two orientations?

electricity  ricky, Saturday, November 23, 2013 at 1:39pm
A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in Am^2?
What is the magnitude of the torque on the loop in Nm?

electricity  Elena, Saturday, November 23, 2013 at 3:48pm
p=IA= Iπr²
τ=pBsinφ (sinφ=1) =>
τ=pB
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