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- 50 cm
mg
*B
(a)
(b)
A wire of length 50 cm and mass 10 g is suspended in a horizontal plane by a
pair of flexible leads. The wire is then subjected to a constant magnetic field of
magnitude 0.50 T, pointing to the plane of the screen as shown. What should
be the magnitude and direction of the current in the wire needed to balance
the weight of the wire?

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