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 86AP: A flashing lamp in a Christmas earring is based on an RC discharge of a capacitor through its...

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The RC charging circuit in a camera flash unit has a voltage source of 255 V and a capacitance of 116 μF.

(a) Find its resistance \( R \) (in ohms) if the capacitor charges to 90.0% of its final value in 16.2 s.

[Input box] 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.

[Input box] A

Note: There is a "HINT" button next to the problem statement, indicating possible additional guidance or formulae for solving the problem.

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