A flat, round iron ring 5.00 cm in diameter has a cur-rent running through it that produces

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A flat, round iron ring 5.00 cm in diameter has a cur-rent running through it that produces a magnetic field of 75.4 μT at its center. This ring is placed in a uniform external magnetic field of 0.375 T. What is the maximum torque the external field can exert on the ring? Show how the ring should be oriented relative to the field for the torque to have its maximum value.

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University Physics with Modern Physics

ISBN: 978-0321696861

13th edition

Authors: Hugh D. Young, Roger A. Freedman, A. Lewis Ford

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