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प्रश्न
A current of 10 A is flowing in a wire of length 1.5 m. A force of 15 N acts on it when it is placed in a uniform magnetic field of 2 T. The angle between the magnetic field and the direction of the current is ______.
विकल्प
30°
45°
60°
90°
MCQ
रिक्त स्थान भरें
उत्तर
A current of 10 A is flowing in a wire of length 1.5 m. A force of 15 N acts on it when it is placed in a uniform magnetic field of 2 T. The angle between the magnetic field and the direction of the current is 30°.
Explanation:
F = IIB sinθ or sinθ = `"F"/"IIB"`
sinθ = `15/(10xx1.5xx2)=1/2` or θ = 30°
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