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

I'm supposed to find whether the current in the following network is

a) under-damped

b) critically damped

c) undamped

c) over-damped

2. Relevant equations

According to Kirchoff's laws

3. The attempt at a solution

The answer given by my professor for this question is supposed to be "b) critically damped" so I just converted the given values into SI values

R = 1kilo-ohm = 1000 ohm

L = 10mH = 0,01H

C = 40nF = 4 * 10^(-8)

and then I tried relating them to

But I do not find two real roots that are equal for it to be critically damped.

What did I do wrong?

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# Homework Help: Critically damped current in this network

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