A) remains unaffected
B) is attracted towards loop
C) is repelled away from loop
D) first attracted and then repelled
Correct Answer: B
Solution :
For parallel wires, same direction currents attract and opposite currents repel. The magnetic force between two parallel wires\[\propto \frac{1}{r}\] \[AB\] and \[CD\] are symmetrical relative to wire\[EF,\] so, they exert equal and opposite forces on EF. As wire BC is nearer to EF as compared to AD and current in both wires is same, so, wire BC exerts larger force than that of AD. So, wire EF will be attracted towards the loop.
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