A parallel plate air capacitor whose plates are separated by a distance d 5 0 mm is first charged to a potential difference V 90 V and then disconnected from a dc voltage source Find the time interval during which the voltage across the capacitor decreases by 1 0 , taking into account that the average number of ion pairs formed in air under standard conditions per unit volume per unit time is equal to nt 5 0 cm 3 s 1 and that the given voltage corresponds to the saturation current

Question: A parallel-plate air capacitor whose plates are separated by a distance d = 5.0 mm is first-charged to a potential difference V = 90 V

A parallel-plate air capacitor whose plates are separated by a distance d = 5.0 mm is first-charged to a potential difference V = 90 V and then disconnected from a dc voltage source. Find the time interval during which the voltage across the capacitor decreases by η = 1.0%, taking into account that the average number of ion pairs formed in air under standard conditions per unit volume per unit time is equal to nt = 5.0 cm-3 ∙ s-1 and that the given voltage corresponds to the saturation current.

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