College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 55

A technician wraps wire around a tube of length 36 cm having a diameter of 8.0 cm. When the windings are evenly spread over the full length of the tube, the result is a solenoid containing 580 turns of wire. (a) Find the self-inductance of this solenoid. (b) If the current in this solenoid increases at the rate of 4.0 A/s, what is the self-induced emf in the solenoid