A horizontal wire of length 0.26 m, carrying a current of 7.2 A, is placed in a uniform external magnetic field. When th

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A horizontal wire of length 0.26 m, carrying a current of 7.2 A, is placed in a uniform external magnetic field. When th

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A horizontal wire of length 0.26 m, carrying a current of 7.2 A,is placed in a uniform external magnetic field. When the wire ishorizontal, it experiences no magnetic force. When the wire istilted upward at an angle of 20°, it experiences a magnetic forceof 6.9 × 10-3 N. Determine the magnitude of the external magneticfield.
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