APFIVE Magnetic Force on a Current-Carrying Wire
A horizontal wire of mass 5.0 g and length 25 cm carries a current perpendicular to a vertical magnetic field. If the magnetic force exactly balances the weight of the wire, what is the minimum current required in the wire when the magnetic field strength is 0.20 T?
A
2.45 A
B
0.98 A
C
0.49 A
D
1.96 A
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