The Voltage Between the Cathode and the Screen of a Computer

question 76

Multiple Choice

The voltage between the cathode and the screen of a computer monitor is 12 kV.If we assume a speed of zero for an electron as it leaves the cathode,what is its speed just before it hits the screen?

• A)8.8 × 10⁷ m/s
• B)6.5 × 10⁷ m/s
• C)4.2 × 10¹⁵ m/s
• D)7.7 × 10¹⁵ m/s
• E)5.3 × 10⁷ m/s

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