One solenoid is centered inside another. The outer one has a length of 54.0 cm and contains 6800 coils, while the coaxial inner solenoid is 3.00 cm long and 0.120 cm in diameter and contains 24.0 coils. The current in the outer solenoid is changing at 38.0 A/s.
Part A) What is the mutual inductance of these solenoids? (units should be uH)
Part B) Find the emf induced in the inner solenoid. (units should be V)