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Simran Bhatia Grade: 11
        A straight, horizontal wire of mass 10 mg and length 1.0 m carries a current of 2.0 A. What minimum magnetic field B should be applied in the region so that the magnetic force on the wire may balance its weight?
3 years ago

Answers : (1)

Aditi Chauhan
askIITians Faculty
396 Points
										Sol. Mass = 10 mg = 10^–5 kg

Length = 1 m
I = 2 A, B = ?
Now, Mg = ilB
⇒B = mg/il = 10^-5 *9.8/2 * 1 = 4.9 * 10^-5 T
3 years ago
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