Part C What is the value of resistance R 2 ? Enter your answer with three significant figures. What voltage does the capacitor have at the time switch S 2 opens? Enter your answer with three significant figures. The flash circuit takes 1.5V and turns it into anywhere from 300 to 350 volts, and what's nice about these cameras is that you can go to any pharmacy, and if you ask nicely, they'll give a whole bunch to you. Your answer 0.015 F was either rounded differently or used a differe Part B What voltage does the capacitor have at the time switch S 2 opens? Enter your answer with three significant figures. Disposable cameras are a great source of moderately high voltage inverters. What is the value of capacitance C? Enter your answer with three significant figures. The energy delivered to the flash resistor R 2 is E = 5.8 × 1 0 − 2 J before switch S 2 opens The capacitor reaches 92% of the total charge in time t 1 = 2.72 s from a completely discharged state 2.
The capacitor is fully charged when switch S 2 closes Your task is to find the values of the capacitance C and resistance R 2 such that 1. When the shutter button of the camera is pressed, switch S 1 opens, switch S 2 closes for a time t 2 = 2.4 × 1 0 − 2 s, after which S 2 opens and S 1 closes for the capactor to be charged for the next flash. When you turn the flash unit on, switch S 1 is closed and the capacitor fully charges through a battery with voltage V 0 = 112 V and a resistor R 1 = 70.5Ω.
The diagram below shows a simple camera flash circuit.
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