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Statement of a problem № 3848

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A 2 m long wire weighs 4 g and carries a 10 A current. It is constrained to move only vertically above another wire carrying 15 A in the opposite direction. At what separation would its weight be supported by magnetic force?

Solution:
A 2 m long wire weighs 4 g and carries a 10 A current. It is constrained to move

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