Asked by | 16th Feb, 2010, 10:04: PM
The changing factor could be mechanical such as distance between the plates or area of place surface which overlaps in a capacitor with many semicircular plates, fixed to a rotating axis.
Some semiconductor capcacitors are electronical made variable capacitors by changing the thickness of depletion layer and doping.
Answered by | 17th Feb, 2010, 08:11: AM
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