1. A bolt of lightning strikes the ground 200 m from a 100-turn coil oriented vertically and with the plane of the coil pointing toward the lightning strike. The radius of the coil is 0.800 m and the current in the lightning bolt falls from 6.00 × 10⁶ A to zero in 10.5 μs. What is the voltage induced in the coil over this time period?

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