College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 46

A 60.0-m length of insulated copper wire is wound to form a solenoid of radius 2.0 cm. The copper wire has a radius of 0.50 mm. (a) What is the resistance of the wire (b) Treating each turn of the solenoid as a circle, how many turns can be made with the wire (c) How long is the resulting solenoid (d) What is the self-inductance of the solenoid (e) If the solenoid is attached to a battery with an emf of 6.0 V and internal resistance of 350 mV, compute the time constant of the circuit. (f) What is the maximum current attained (g) How long would it take to reach 99.9% of its maximum current (h) What maximum energy is stored in the inductor