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A rectangular loop with dimensions (horizontal 0.25 m) x (vertical 0.575 m) is suspended by a string and the lower horizontal section of the loop is immersed in a magnetic field. If a current of 3.5 A is maintained in the loop, what is the magnitude of the magneticfield required to produce a tension of 0.066 N in the supporting string? Assume gravitational force is negligible. Answer in units of T.

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