The flash on a compact camera stores energy in a 100 µF capacitor that is charged to 220 V. When the flash is fired, the capacitor is quickly discharged through a lightbulb with 6.0 Q of resistance. (a) Draw an appropriate circuit for this situation. (b) What is the initial charge on the flash capacitor. (c) Light from the flash is essentially finished after two time constants have elapsed. For how long does this flash illuminate the scene?

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**Flash Discharge in a Camera Circuit**

The flash on a compact camera stores energy in a 100 μF capacitor that is charged to 220 V. When the flash is fired, the capacitor is quickly discharged through a light bulb with 6.0 Ω of resistance.

(a) **Draw an appropriate circuit for this situation.**

(b) **What is the initial charge on the flash capacitor?**

(c) **Light from the flash is essentially finished after two time constants have elapsed. For how long does this flash illuminate the scene?**

(d) **What is the current in the light bulb immediately after the flash is fired? What is the current in the light bulb as a function of time? (Assume the flash is fired at t = 0)**

(e) **At what rate is the light bulb dissipating energy 280 μs after the flash is fired?**

(f) **What total energy is dissipated by the light bulb?**
Transcribed Image Text:**Flash Discharge in a Camera Circuit** The flash on a compact camera stores energy in a 100 μF capacitor that is charged to 220 V. When the flash is fired, the capacitor is quickly discharged through a light bulb with 6.0 Ω of resistance. (a) **Draw an appropriate circuit for this situation.** (b) **What is the initial charge on the flash capacitor?** (c) **Light from the flash is essentially finished after two time constants have elapsed. For how long does this flash illuminate the scene?** (d) **What is the current in the light bulb immediately after the flash is fired? What is the current in the light bulb as a function of time? (Assume the flash is fired at t = 0)** (e) **At what rate is the light bulb dissipating energy 280 μs after the flash is fired?** (f) **What total energy is dissipated by the light bulb?**
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