Discharging capacitor

  • Thread starter James889
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  • #1
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Main Question or Discussion Point

Hi,

If i have a capacitor rated x micro-Farads. And i know that it is charged to a certain voltage.
And it's being discharged by a current. How would i find the time it takes to completly discharge the capacitor?
 

Answers and Replies

  • #2
887
98
google: capacitor rc
 
  • #3
192
1
okay so it's an exponential decay type of function?
I suspect this is really easy. I have that the capacitor is rated at 1014[tex]\mu[/tex] farads
and that it is charged to 179V, and is being discharged at a constant rate of 163[tex]\mu[/tex]A
 
Last edited:
  • #4
berkeman
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okay so it's an exponential decay type of function?
I suspect this is really easy. I have that the capacitor is rated at 1014[tex]\mu[/tex] farads
and that it is charged to 179V, and is being discharged at a constant rate of 163[tex]\mu[/tex]A
If you are discharging with a constant current, the voltage decay is not exponential, it is linear.

How exactly is this capacitor being discharged? How did it get to 179V in the first place?
 
  • #5
192
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Hmm, sorry. I just discovered i posted in the wrong forums.
Forgive me...
 
  • #6
berkeman
Mentor
56,665
6,560
Hmm, sorry. I just discovered i posted in the wrong forums.
Forgive me...
No worries. Do you want me to move the thread to the Homework Help forums?
 

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