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Suppose a straight 1.50 mm -diameter copper wire could just float horizontally in air because of the force due to the Earth's magnetic field B,

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Suppose a straight 1.50 mm -diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.3x10-5 T .What current would the wire carry? Inn twin sinnificant figures

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