(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?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Critically damped current in this network

**Physics Forums | Science Articles, Homework Help, Discussion**