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Physics, 08.02.2021 09:30 bellsimps7179
A beam current in a TV tube is 1.9mA. The beam cross section is circular with radius 0.5mm. a. How many electrons strike the screen per second? b. What is the current density
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A beam current in a TV tube is 1.9mA. The beam cross section is circular with radius 0.5mm. a. How m...
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