# Value of capacitor

Discussion in 'Homework Help' started by robat davies, Mar 4, 2015.

1. ### robat davies Thread Starter New Member

Mar 4, 2015
6
1
A capacitor is discharged through a 10Mohm resistor and it is found that the tie constant is 200s. calculate the value of the capacitor. Help please I missed the lesson on which this work was explained. Thanks

2. ### #12 Expert

Nov 30, 2010
18,076
9,691
Remembering back 30 years...40 years...T=RC

robat davies likes this.
3. ### robat davies Thread Starter New Member

Mar 4, 2015
6
1
Thank you very much

4. ### WBahn Moderator

Mar 31, 2012
24,562
7,700
You might want to go back and read the material concerning the lesson you missed. I'm guessing you have quite a few holes that need to be filled from that topic.

5. ### robat davies Thread Starter New Member

Mar 4, 2015
6
1
ok, thanks, yeah I missed a few lessons when having an entrance exam for an University.

6. ### WBahn Moderator

Mar 31, 2012
24,562
7,700
Ah. Then it's even more important to be sure and go back and fill in the gaps. This material builds on itself and the topics you are doing now are foundational, which means that any holes that don't get filled will haunt you down the road in a big way.

7. ### Dodgydave AAC Fanatic!

Jun 22, 2012
8,286
1,447
20uF is a good starting point....

8. ### WBahn Moderator

Mar 31, 2012
24,562
7,700
Would you PLEASE stop just giving students the answers to their problems. Unless, of course, you plan to take their exams for them and sit next to them their entire career doing their work for them so that they never actually have to learn how to solve problems for themselves.