how the capacitor store energy
I think my question is clear ,any way thanks,but the capacitor store energy=1/2 cv^2....Is that the whole question? Having over 200 posts, I expected you'd have learned by now that we need fully-worded, clear questions in order to give good answers.
charge.
There's a nice little write-up here: http://www.physics.sjsu.edu/becker/physics51/capacitors.htm
That would seem to an overly restrictive definition.Anyway, capacitors do not store energy. Simple as that. Instead, they store charge.
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I stand corrected.That would seem to an overly restrictive definition.
Capacitors actually store both, of course. They store energy by storing charge as determined by the voltage applied to transfer the charge.
Yup, I remember seeing that before, specifically the last one. Not really sure what I was thinking.Not quite. Charge, voltage and capacitance are all inter-related, much like Ohm's Law.
\(V = \frac{Q}{C}\)
Hence the energy stored in a capacitor of a given capacitance C can can be determined entirely from charge Q,
\(E = \frac{1}{2}\frac{Q^2}{C} \)
or from voltage V,
\(E = \frac{1}{2}CV^2 \)