A straight wire of length 35 m carries a current of 42 a, Ask an Expert

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A straight wire of length 3.5 m carries a current of 42 A and it is placed on a horizontal table in a horizontal uniform magnetic field. The wire makes an angle of 44 degrees with the magnetic field lines. If the magnitude of the force on the wire is 9.0 N, what is the magnitude of the magnetic field?

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