A camera requires 5.2J of energy for a flash lasting 1.0 ms. Part A What power d
ID: 2113434 • Letter: A
Question
A camera requires 5.2J of energy for a flash lasting 1.0 ms. Part A What power does the flashtube use while it%u2019s flashing? P=______kW Part B If the flashtube operates at 280V , what size capacitor is needed to supply the flash energy? C=_________uF Part C If the flashtube is fired once every 10 s, what%u2019s its average power consumption? Pav=__________W A camera requires 5.2J of energy for a flash lasting 1.0 ms. Part A What power does the flashtube use while it%u2019s flashing? P=______kW Part B If the flashtube operates at 280V , what size capacitor is needed to supply the flash energy? C=_________uF Part C If the flashtube is fired once every 10 s, what%u2019s its average power consumption? Pav=__________W Part A What power does the flashtube use while it%u2019s flashing? P=______kW Part B If the flashtube operates at 280V , what size capacitor is needed to supply the flash energy? C=_________uF Part C If the flashtube is fired once every 10 s, what%u2019s its average power consumption? Pav=__________W Part B If the flashtube operates at 280V , what size capacitor is needed to supply the flash energy? C=_________uF Part C If the flashtube is fired once every 10 s, what%u2019s its average power consumption? Pav=__________WExplanation / Answer
a)
power= 5.2/10^-3 J/s =5.2kW
b)
W=1/2CV^2
C =(2*5.2) /(280*280) farads =132 micro F
c)
power = energy/time
= 5.2/10 = 0.52 watts.
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