Capacitors: How do they store energy ?


by hms.tech
Tags: capacitors, energy, store
sophiecentaur
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Jan21-13, 10:04 AM
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Quote Quote by hms.tech View Post
We can infer that the potential energy would really decrease ie become more negative.
If that is true, how can a charged capacitor(with negative energy) do positive work while it discharges to power a bulb? (its absurd)
Nah
As you charge up the capacitor, the potential energy becomes LESS negative because you are separating charges (it's an attractive force involved). It follows that you get energy OUT when the system returns to its more negative state (capacitor discharges through the connected load).


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