A Straight Wire of Length 3 $\circ$ with the Magnetic Field Lines

A straight wire of length 3.5 m carries a current and it is placed on a horizontal table in a horizontal uniform magnetic field of 0.14 T.The wire makes an angle of 44 ^$\circ$ with the magnetic field lines.If the magnitude of the magnetic force on the wire is 9.0 N,what is the current in the wire?

A) 36 A
B) 42 A
C) 48 A
D) 67 A
E) 26 A

Correct Answer:

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