The Current in an Electron Beam in a Cathode-Ray Tube

question 34

Multiple Choice

The current in an electron beam in a cathode-ray tube is measured to be 70 µA.How many electrons hit the screen in 5.0 s? (e = 1.6 x 10^-19 C)

• A)2.2 x 10¹¹ electrons
• B)8.8 x 10¹³ electrons
• C)2.2 x 10¹⁵ electrons
• D)8.8 x 10¹⁸ electrons

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Definitions:

Post-Traumatic Stress

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Flashbacks

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Medical Model

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