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lorasvet [3.4K]
3 years ago
8

Electronic flash units for cameras contain a capacitor for storing the energy used to produce the flash. In one such unit, the f

lash lasts for a time interval of 1.45×10−3 s with an average light power output of 2.20×105 W .a) If the conversion of electrical energy to light has an efficiency of 90.0 \% (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?

Physics
1 answer:
gladu [14]3 years ago
8 0

Answer:

A) energy to be stored = 354.4J

B) capacitance = 0.0454 farad

Explanation:

Detailed explanation and calculation is shown in the image below

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