One solenoid is centered inside another. The outer one has a length of 47 centimeter and contains 6800 coils, while the coaxial inner solenoid is 5.00 cm long and 0.200 centimeter in diameter and contains 24 coils. The current in the outer solenoid is changing at 35 A/s.
A. Obtain the mutual inductance of these solenoids?
B. Compute what the emf induced in the inner solenoid.