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  • 03-08-2018
  • Physics
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An air-filled 20-μf capacitor has a charge of 60 μc on its plates. how much energy is stored in this capacitor?

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Pitymys Pitymys
  • 12-08-2018

Thew energy stored in a capacitor of capacitance [tex] C [/tex] and voltage between the plates [tex] V [/tex] is

[tex] E=\frac{1}{2} CV^2=\frac{1}{2C} Q^2 [/tex].

Substituting numerical value

[tex] E=\frac{1}{2*20*10^{-6}} (60*10^{-6})^2\\
E=90\; \mu J [/tex]

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