Two capacitors are identical, except that one is empty and the other is filled with a dielectric ( k= 5.00). The empty capacitor is connected to a 6.0 V battery. What must be the potential difference across the plates of the capacitor filled with a dielectric such that it stores the same amount of electrical energy as the empty capacitor?(adsbygoogle = window.adsbygoogle || []).push({});

So here are my thoughts so far.....

V= 6 V

Energy=.5CV^2

So the energy of the empty capacitor is .5V^2 which is .5(18^2)=18 right????? they give no value for C so i assume it is one???

I have no idea where k comes into the picture. please help. thanks.

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# Homework Help: Capacitors and Dielectrics of a circuit

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