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 4 GE RCA Sylvania * 7N7 * Tubes US $29.95 
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How many electrons flow from a cathode to the anode each second in an x-ray tube with a tube current of 50 mA?
How many electrons flow from a cathode to the anode each second in an x-ray tube with a tube current of 50 mA? (1A=1 coulomb/sec.) If the tube voltage is constant and equals 100 kV, at what rate (joules per second) is energy delivered to the anode?
part a.) 50 mAs * 6.25*10^15 elct/mAs = 3.125 x 10^17 electrons
part b.) P=VI 100x10^3 V * 50x10^-3 A = 5000 J/s
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