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A Straight Wire of Length Is Oriented East-West and Is

question 12

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A straight wire of length A straight wire of length   is oriented east-west and is in a magnetic field B pointing north. The wire is moving downward at a constant speed v. If the resistance of the rod is R, what is the current through the rod? A)  B<sup>2</sup> <sup> </sup>   <sup>2</sup> v<sup> 2</sup>/R<sup>2</sup> B)  R/B   v C)  B   v /R D)  not given is oriented east-west and is in a magnetic field B pointing north. The wire is moving downward at a constant speed v. If the resistance of the rod is R, what is the current through the rod?


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