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1. Two parallel wires are positioned at d = 37.5 cm apart. Initially a current I 1 = 5.19 A flows up the screen through wire 1, and wire 2 has no current in it. What is the magnetic field strength halfway between the two wires?
2. A current is now sent through wire 2. The magnetic field at a distance of l = 2.84 cm from wire 1, between the two wires, is found to be 0T. What is the size of the current flowing through wire 2?
3. Question text What is the force experienced per metre by wire 1 when this current flows through wire 2?
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