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Answer: Electronic flash units for cameras contain a
Chapter 24, Problem 47P(choose chapter or problem)
Problem 47P
Electronic flash units for cameras contain a capacitor for storing the energy used to produce the flash. In one such unit, the flash lasts for \(\frac{1}{675}\)S with an average light power output of \(2.70 \times 10^{5}\) W. (a) If the conversion of electrical energy to light is 95% efficient (the rest of the energy goes to thermal energy), how much energy must be stored in the capacitor for one flash? (b) The capacitor has a potential difference between its plates of 125 V when the stored energy equals the value calculated in part (a). What is the capacitance?
Equation Transcription:
Text Transcription:
1/675
2.70x10^5
Questions & Answers
QUESTION:
Problem 47P
Electronic flash units for cameras contain a capacitor for storing the energy used to produce the flash. In one such unit, the flash lasts for \(\frac{1}{675}\)S with an average light power output of \(2.70 \times 10^{5}\) W. (a) If the conversion of electrical energy to light is 95% efficient (the rest of the energy goes to thermal energy), how much energy must be stored in the capacitor for one flash? (b) The capacitor has a potential difference between its plates of 125 V when the stored energy equals the value calculated in part (a). What is the capacitance?
Equation Transcription:
Text Transcription:
1/675
2.70x10^5
ANSWER:
Solution 47P
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