Chapter 34, Problem 25SP

(a)

To determine

The rate of the current at the instant the coil, of inductance $0.20\text{H}$ and $1.0\Omega$ resistance, is connected to the $90\text{V}$ voltage source.

(b)

To determine

The rate of the current at the instant when the current in the coil, of inductance $0.20\text{H}$ and $1.0\Omega$ resistance, reaches two-thirds of its maximum value whenconnected to the $90\text{V}$ voltage source.