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A closely wound search coil (see Exercise 29.3) has an area of 3.20 cm2, 120 turns, and a resistance of 60.0 Ω. It is connected to a charge-measuring instrument whose resistance is 45.0 Ω. When the coil is rotated quickly from a position parallel to a uniform magnetic field to a position perpendicular to the field, the instrument indicates a charge of 3.56 × 10−5 C. What is the magnitude of the field?
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