31. Alternating Current
Capacitors in AC Circuits
9:25 minutes
Problem 31.6b
Textbook Question
Textbook Question(II) Suppose an air-gap capacitor has circular plates of radius r = 2.5 cm and separation d = 1.6 mm. A 68.0-Hz emf, ε = ε₀ cos ωt, is applied to the capacitor. The maximum displacement current is 35 μA. Determine (b) the value of ε₀. Neglect fringing.
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