26. Capacitors & Dielectrics
Parallel Plate Capacitors
5:55 minutes
Problem 24.19a
Textbook Question
Textbook Question(III) Small distances can be measured using a capacitor whose plate separation π is variable. Consider an air-filled parallel-plate capacitor with fixed plate area A = 25 mmΒ² separated by a variable distance π. Assume this capacitor is attached to a capacitance-measuring instrument which can measure capacitance C in the range 1.0 pF to 1000.0 pF with an accuracy of βC = 0.1 pF .
(a) If C is measured while π is varied, over what range ( πβα΅’β β€ π β€ πβββ) can the plate-separation distance (in ΞΌm) be determined by this setup?
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