A stiff wire 32.5 cm long is bent at a right angle in the middle. One section lies along the z axis and the other is along the l
ine y=2x in the xy plane. A current of 25.0 A flows in the wire-down the z axis and out the line in the xy plane. The wire passes through a uniform magnetic field given by B =(0.318i)T. Determine the magnitude and the direction of the total force on the wire.
The law of energy conservation states that energy cannot be created or destroyed, so choices B to D are immediately invalid. Choice A can explain this occurrence: <u>A. Some of the energy is used to combat friction, and thus is transformed from mechanical energy to heat.</u>
