# RLC circuit problem

#### mathiscool1

1. The problem statement, all variables and given/known data

http://imgur.com/a/3xSYb

2. Relevant equations
RLC equations:

q= Qmax e ^ -Rt/2L cos wd t

wd = [ 1/LC - (R/2L)^2] ^ 1/2

3. The attempt at a solution
So, im trying using Kirchoff law, but not sure what the question asks.

I thought it may be a trick and after a long long time C will be fully charged and L will act as a simple wire, so it will be a simple circuit with Resistors.

Last edited:
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#### Alexanddros81

I canot see the image attached.

#### mathiscool1

I canot see the image attached.

#### phinds

Gold Member
Your image isn't showing up for me either and I see no link. Your best bet is to embed the image here directly, not with a link.

#### mathiscool1

I don't know.
For me, there's a link and shows the image. Don't know how it's not showing.

#### gneill

Mentor
I thought it may be a trick and after a long long time C will be fully charged and L will act as a simple wire, so it will be a simple circuit with Resistors.
Yes, the phrase "after a sufficiently long time" is a typical hint used in problems to refer to the eventual steady state conditions. Suppress the reactive components as you suggest and analyze the resulting resistor network.

I don't know.
For me, there's a link and shows the image. Don't know how it's not showing.

Off-site links have a tendency to get broken over time, or have their content removed, making their threads less than useful to future members seeking information.

#### mathiscool1

Thank you.

Im in doubt should i remove the C and keep it as a RL circuit or both of them.

#### gneill

Mentor
Im in doubt should i remove the C and keep it as a RL circuit or both of them.
Open (remove) the C and short the L.

#### SammyS

Staff Emeritus
Homework Helper
Gold Member
I don't know.
For me, there's a link and shows the image. Don't know how it's not showing.

"RLC circuit problem"

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