In Large Televisions,electrons Are Accelerated from Rest by a Potential

question 44

Multiple Choice

In large televisions,electrons are accelerated from rest by a potential difference of 20 kV and shot onto a phosphorescent screen to produce an image.What is the speed of the electrons when they reach the screen?

• A)1.4 * 10⁶ m/s
• B)1.3 * 10⁷ m/s
• C)4.4 * 10⁷ m/s
• D)5.9 * 10⁷ m/s
• E)8.4 * 10⁷ m/s

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Definitions:

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