Capacitors (7 of 9) Energy Stored in a Capacitor, An Explanation

Explains how energy is stored in a capacitor and how to calculate the work done by the battery and the amount of energy stored in the capacitor.
A capacitor is a passive electronic device that stores electric charge on its plates and electrical energy in its electric field. A capacitor contains at least two electrical conductors such as metal plates that are separated by a dielectric. The insulating dielectric acts to keep the metal plates isolated from each other and to increase the capacitor's ability to store charge. Materials commonly used as dielectrics include glass, ceramic, plastic film, paper, mica and air. Unlike a resistor, an ideal capacitor does not dissipate energy. The SI unit of capacitance is the farad (F), which is defined as one coulomb per volt (1 C/V).
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[@abd5491]

I can't thank you enough .All your lessons are extremely helpful!

[@angesamma6231]

Very articulate and clear!

[@mahendrapathak1144]

Sir very nice explaination . Thanks a lot ... LOTS OF LOVE FROM INDIA

[@stepbystepscience]

Thanks for the comment and and you are most welcome from Berlin Germany.

[@prational]

Excellent! Thanks

[@papadexallaroundguy2998]

I have a 12 volt fan can i put capacitor and what capacitor i put

[@khanengineering7158]

which combination store more energy????

[@aboodazmi780]

sir, your videos had saved me long hours of reference reading. thanks a lot 👍👍

[@stepbystepscience]

You are most welcome, best wishes.

[@malvinmarume9853]

Very inspiring thanks bro

[@sheruloves9190]

sir ur explanation s trly very sweet and simple it has helped me lot to learn difficu concepts in easy way
thank u so much

[@stepbystepscience]

Thanks. Yes I try to get right to it. No reason to waste time.

[@HDMovieClips21]

thank you so much

[@melodychan6119]

would like to ask so how is the total energy taken from the battery during the charging process is different to the total energy of the battery?

[@Bxu021]

this was very useful! thanks!

[@stepbystepscience]

You're welcome, glad it was helpful!

[@kfkok4instamedia918]

Thanks for this explanation ! I assume if we plot a Voltage vs Electrons transferred graph, we can see the first point (first electron) has 0V, and the last point (last electron) has 9V, it will look like a linear ascending line from 0 to 9V. This forms a triangle which is half of total charge (Q) * voltage (9V)

[@Graham_Wideman]

Yes, and this example suffers by showing a 9V battery, which implies that as soon as the switch closes the capacitor plates are at 9V. It would be better to replace the battery with a current source, and show it charging the cap from zero volts to 9V.

[@kensonmalupande2424]

Excellently explained 👍👍

[@stepbystepscience]

Thank you, glad you think so!

[@techcraft2111]

Extremely Helpful sir Was struggling to understand this ;-; but it makes sense :)

[@stepbystepscience]

Great, hope you get it.

[@junkymonkey5752]

Awesomeeee.thanks so much.

[@stepbystepscience]

You bet!

[@wajoobaloch5394]

Hi sir , Is there any capacitor that can stores energy for the day or days?

[@stepbystepscience]

if they are in an electric circuit, yes....otherwise they lose their charge

[@hollywoodmaniac7623]

Very nice sir

[@stepbystepscience]

Thanks a lot

[@spencil9941]

Where did the "1/2" come from?

[@stepbystepscience]

That is a great question, did I not explain it in the video. I know I did somewhere.

[@benjaminkapingu4167]

Educative

[@stepbystepscience]

Thanks!

[@samerator4233]

Where does half the energy go?
If you were to go by the definition of potential difference (work done to move 1 C charge across) then we find that V=W/Q and we know that W = Q V/2.
But if we were to sub in a value for V ie.
W = Q W/ Q 2 (Q gets cancelled)
W = W/2 or
1= 1/2 and that's not true so how is the energy magically halved? Where does half the energy go? Heat is obviously not the answer but where else could this 1/2 go?

[@vijgenboom2843]

❤

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[@stepbystepscience]

Nice to see you on my channel. Thanks for watching!

[@richardrandolph9794]

Great video. Now my text makes more sense!

[@stepbystepscience]

Awesome!

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Am the 600 like guy