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QUESTION
Suppose a straight 1.
Suppose a straight 1.45 mm diameter copper wire could just "float" horizontally in air because of the force of the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.00 ✕ 10-5 T. What current would the wire carry?
A
Does the answer seem feasible?
yes
no
Explain, briefly.
