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A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in a uniform magnetic field of magnitude 4.0\times 10^{-5}~\text{T}4.0×10 −5 T that is directed vertically downward, what is the resultant magnitude of the magnetic field 20 cm above the wire?
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A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in...
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