The RC charging circuit in a camera flash unit has a voltage source of 255 V and a capacitance of 116 µF. HINT (a) Find its resistance R (in ohms) if the capacitor charges to 90.0% of its final value in 16.2 s. Ω (b) Find the average current (in A) delivered to the flash bulb if the capacitor discharges 90.0% of its full charge in 1.34 ms. A

The RC charging circuit in a camera flash unit has a voltage source of 255 V and a capacitance of 116 µF. HINT (a) Find its resistance R (in ohms) if the capacitor charges to 90.0% of its final value in 16.2 s. Ω (b) Find the average current (in A) delivered to the flash bulb if the capacitor discharges 90.0% of its full charge in 1.34 ms. A

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 51P: The duration of a photographic flash is related to an RC time constant, which is 0.100F for a...

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