College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 14

A 25-mH inductor, an 8.0-V resistor, and a 6.0-V battery are connected in series as in Figure P20.43. The switch is closed at t = 0. Find the voltage drop across the resistor (a) at t = 0 and (b) after one time constant has passed. Also, find the voltage drop across the inductor (c) at t = 0 and (d) after one time constant has elapsed.