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Did you mean that?kuruman said:the magnetic field will point in the direction of the net electric field
Several things bother me about the question. I did wonder if it has been accurately worded in post #1, but at https://www.knowledgeboat.com/quest...wo-stretched-copper-wires--711181432220828700 I see exactly the same wording. I also see that the official-looking answer given there claims it does not matter which is which of the poles, merely that they be different. That's a stronger statement than in post #1, and seems extremely unlikely.
It also bothers me that we are not told the circuit is horizontal, that the F arrow looks like it is in the plane of the circuit, that it is shown as acting on the rod, and that it is not entirely clear whether the wording refers to the force on the rod or the force on the poles.
Finally, what is the significance of stretched wires versus a thick rod? It's the same current all the way around. Am I missing something?