Solve the all parts of following question given below:
Question: The inductance of a solenoid with 470 turns and a length of 23cm is 7.6mH.
Part A: What is the cross-sectional area of the solenoid?
Part B: What is the induced emf in the solenoid if its current drops from 3.1A to 0 in 55ms?
I want help to determine the cross-sectional area of the solenoid.