Find current through inductor after many time constants.

[jlmccart03]

Homework Statement

In the figure, R = 1.9 kΩ and ε0 = 60 V . When the switch is closed, the current through the inductor rises to 10 mA in 30 μs .

What will the current in the circuit be after many time constants?

Homework Equations

I = V/R or I = ε/R if current is constant which after many time constants it should be correct?

The Attempt at a Solution

So I attempted to use I = ε/R, but that presented the wrong answer. So then I thought about the question and I remembered that after many time constants that is essentially saying a τ→∞ which would make ε = IR and again I = ε/R so I am not lost on where my thinking was going and if I was even correct in the initial process?

 

[gneill]

What, precisely, was the value that you calculated and entered?

 

[jlmccart03]

What, precisely, was the value that you calculated and entered?

I got 31.5789 A, which is taking ε = 60V and R = 1.9 Ω. EDIT: The Ω where in kΩ. I just needed to convert it and got the correct answer.