The duration of a photographic flash is related to an RC time constant, which is 0.110 us for a certain camera. (a) If the resistance of the flash lamp is 0.0470 during discharge, what is the size (in µF) of the capacitor supplying its energy? μF (b) What is the time constant (in s) for charging the capacitor, if the charging resistance is 700 kn? S

University Physics Volume 2
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Chapter10: Direct-current Circuits
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The duration of a photographic flash is related to an RC time constant, which is 0.110 us for a certain camera.
(a) If the resistance of the flash lamp is 0.0470 during discharge, what is the size (in µF) of the capacitor supplying its energy?
μF
(b) What is the time constant (in s) for charging the capacitor, if the charging resistance is 700 kn?
S
Transcribed Image Text:The duration of a photographic flash is related to an RC time constant, which is 0.110 us for a certain camera. (a) If the resistance of the flash lamp is 0.0470 during discharge, what is the size (in µF) of the capacitor supplying its energy? μF (b) What is the time constant (in s) for charging the capacitor, if the charging resistance is 700 kn? S
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