(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The switch has been closed for a long time.

a) Current flowing through inductor. Voltage across it. IS any current flowing through the resistor.

b) The switch opens at t = 0s. Find an equation for the inductor voltage as a function of time for t > 0. How long does it take for the inductor to reach 10% of its maximum value?

2. Relevant equations

Kirchhoff's Voltage Law (KVL)

3. The attempt at a solution

a) 1A is flowing throw through the inductor as the circuit is stable and the inductor is replaced with a short circuit this causes the resistor to have no current through it and the inductor to have no voltage across it.

b) This is where I am not sure about:

t > 0

I used the KVL equation around the circuit to get:

[tex]-(100)10^{-3}\frac{di_{L}}{dt} + 1i_{L} = 0[/tex]

I am not sure if this is the right way to do this.

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# Homework Help: Simple RL Circuit

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