A solenoid has a cross-sectional area of 7.7 x 10 m2, consists of 310 turns per meter, and carries a current of 0.43 A. A 20-turn coil is wrapped tightly around the circumference of the solenoid. The ends of the coil are connected to a 1.4-g resistor. Suddenly, a switch is opened, and the current in the solenoid dies to zero in a time of 0.039 s. Find the average current induced in the coil. Number 47.24 Units
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