A 12-μF Capacitor in a Flash Camera Is Charged by a a 1.5-V

question 59

Multiple Choice

A 1.2-μF capacitor in a flash camera is charged by a 1.5-V battery. When the camera flashes, this capacitor is discharged through a resistor. The time constant of the circuit is 10 ms. What is the value of the resistance?

• A) 8.0 × 10^-2 Ω
• B) 0.12 Ω
• C) 12 kΩ
• D) 8.3 kΩ
• E) 3.1 kΩ

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