Magnitude of magnetic field required to suspend the wire
A copper wire has diameter 0.160 mm and length 18.0 cm. It's in a horizontal plane and carries a current of 2.10 A. The density of copper is 8920 kg/m^3.
Find the magnitude of the magnetic field needed to suspend the wire against gravity.
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A 7.60 cm length of straight wire runs horizontally along a north-south line. The wire carries a 3.75 A current flowing northward through a uniform 1.25 T magnetic field directed vertically upward. Find the magnitude of the magnetic force on the w
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