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A 50 cm long wire carries a current of 1A in a region with a uniform magnetic field. If the
magnitude of the field is 25 mT. What angle must the wire make with respect to the field if the force
per unit length on the wire is 0.023 N/m?
(а) 23°
(b) 45°
(c) 67°
(d) 85°

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