Magnetic Force on a Current-Carrying Wire
A horizontal wire of mass 5.0 g and length 25 cm is placed in a uniform 0.20 T magnetic field directed perpendicular to the wire. What current must flow through the wire for the magnetic force to exactly balance the wire’s weight?
A
2.45 A
B
0.98 A
C
0.49 A
D
1.96 A
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