7. Two long parallel wires, which carry currents of the same magnitude, are suspended from a...

 

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7. Two long parallel wires, which carry currents of the same magnitude, are suspended from a common point with 1 = 1 m long cords, see Figure (for illustration purposes, the wires are depicted not as thin as we may assume them to be). a) For the wires to repel, what is the relative orien- tation (parallel or anti-parallel) of the currents in the wires? Give arguments for your answer. b) For wires with a mass per length of 30 g/m and a current I = 10 A, calculate the angle a. [10] 7. Two long parallel wires, which carry currents of the same magnitude, are suspended from a common point with 1 = 1 m long cords, see Figure (for illustration purposes, the wires are depicted not as thin as we may assume them to be). a) For the wires to repel, what is the relative orien- tation (parallel or anti-parallel) of the currents in the wires? Give arguments for your answer. b) For wires with a mass per length of 30 g/m and a current I = 10 A, calculate the angle a. [10]