Plate Single
Plate Single
Why does the single fixed plate in a parallel plate capacitor have a small but non-zero capacitance?
Hi heyy, your question is self contradictory! It is not possible to have a single fixed plate in a parallel plate capacitor, since "parallel plate capacitor" implies at least 2 plates (since one plate can't be parallel by itself). However I think what you mean is that if you took a single plate out of a parallel plate capacitor, why does it have a small but non-zero capacitance?
The reason is that there will be some object, somewhere, at some distance from the single plate and therefore the plate together with that object (or objects) will form a capacitor, regardless of whether the object(s) are flat or not.
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