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Feb10-13, 10:38 PM
P: 15
Suppose a (parallel plate) capacitor of capacitance C is charged to a potential difference V and then disconnected and isolated. Energy stored E1= Q2/2C.

Now if a material of appropriate dimensions and dielectric constant K is fully inserted between the plates, energy stored E2= Q2/2KC.

E2 < E1.

My question is: where did the "missing" energy go?
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