A circular coil of radius 4.00 cm contains 120 loops and its plane is positioned perpendicular to a uniform 0.74-T magnetic field, as shown. It is quickly and uniformly pulled from the field to a region where the B-field drops abruptly to zero. It takes 0.12 s for the whole coil to reach the field-free region. How much power is dissipated in the coil if its resistance is 170 Ω?

Physics for Scientists and Engineers: Foundations and Connections
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ISBN:9781133939146
Author:Katz, Debora M.
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A circular coil of radius 4.00 cm contains 120 loops and its plane is positioned perpendicular to a uniform 0.74-T magnetic field, as shown. It is quickly and uniformly pulled from the field to a region where the B-field drops abruptly to zero. It takes 0.12 s for the whole coil to reach the field-free region. How much power is dissipated in the coil if its resistance is 170 Ω? 

 

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