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The current in an electron beam in a cathode ray tube is 7.0 X 10^-5 A. A beam of electrons is aimed at a screen. How much charge hits the screen in 5.0S? A- 2.8X10^3 C B-5.6X10^-2 C C-3.5X10^-4 C D-5.
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Jan 3, 2019
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The current in an electron beam in a cathode ray tube is 7.0 X 10^-5 A. A beam of electrons is aimed at a screen. How much charge hits the screen in 5.0S?
A- 2.8X10^3 C
B-5.6X10^-2 C
C-3.5X10^-4 C
D-5.3X10^-6 C
Physics
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Mrhaki
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The current I is defined as the quantity of charge Q that flows in the tube in the unit of time t:
In our problem, we have
and the time is t=5.0 s. Therefore we can find the charge that hits the screen during this time:
Mancocapac
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Jan 9, 2019
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