A coil of radius R = 5 cm lies inside a long solenoid which carries a current I1 = 10 A and has 800 turns/m. The coil carries a current I2 = 4 A and the normal of the plane of the coil is at an angle θ = 30° with the axis of the solenoid. The magnetic field produced by the solenoid at the center is ____ times greater than the magnetic field by the coil at the center. Possible Answers: Answer E is incorrect A. 2000 B. 100 C. 200 D. 8000 E. 1000
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