A wire of length 10.2 m carries a current of I = 695.2 A and is oriented parallel to the ground at a height of 19.2 cm above the ground. The wire has a mass of 0.2 kg but does not fall due to the magnetic force exerted on it by a second wire that is parallel to it, and located directly below it along the ground. What is the current I₀ in the second wire?

 

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