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صفحه خازن
Consider a small capacitor made by creating an insulating layer between two metal surfaces, and assume that the capacitor plates carry charges ±Q.
The initial energy stored in the electrostatic field between the capacitor plates is given
Note that even though charge itself is quantized (in units of |qe|), the charge Q on the capacitor plates is not quantized.
The charge on the capacitor plates (sometimes called a polarization charge) merely represents a displacement of electrons relative to a
Note, however, that regardless of the voltage, capacitor plate separation d must be adequately small such that tunneling can take place.
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