Question: 2) The figure is represented a cross section through three long wires with a linear mass density of 50 g/m. They each carry equal current

2) The figure is represented a cross section through three long wires with a linear mass density of 50 g/m. They each carry equal current in the directions shown. The lower two wires are 4.0 cm apart and are attached to a table. What current will allow the upper wire to "float" so as to form an equilateral triangle with the lower wires? 4.0 cm

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