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One hundred turns of (insulated) copper wire are wrapped arounda wooden cylindrical core of cross-sectional area 8.05 x10-3 m2. The two ends of the wire areconnected to a resistor. The total resistance in the circuit is12.7 Ω. If an externally applied uniform longitudinalmagnetic field in the core changes from 1.70 T in one direction to1.70 T in the opposite direction, how much charge flows through a point in the circuit during the change?

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