An electric field of 4.0 μV/m is induced at a point 2.0 cm from the axis of a long solenoid (radius = 3.0 cm, 800 turns/m). At what rate is the current in the solenoid changing at this instant?
A) 0.50 A/s
B) 0.40 A/s
C) 0.60 A/s
D) 0.70 A/s
E) 0.27 A/s

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The Answer of An electric field of 4.0 μV/m is induced at a point 2.0 cm from the axis of a long solenoid (radius = 3.0 cm, 800 turns/m). At what rate is the current in the solenoid changing at this instant?
A) 0.50 A/s
B) 0.40 A/s
C) 0.60 A/s
D) 0.70 A/s
E) 0.27 A/s

An Electric Field of 4