The electron beam inside a television picture tube is 0.40 mmINT in diameter and ca1Ties
Chapter 22, Problem 58(choose chapter or problem)
The electron beam inside a television picture tube is 0.40 mmINT in diameter and ca1Ties a ctment of 50 A. This electron beamimpinges on the inside of the picture tube screen.a. How many e lec trons strike the screen each second?b. The electrons move with a velocity of 4.0 x 107 mis. Whate lectric field strength is needed to accelerate electrons fromrest to this velocity in a distance of S.0 mm?c. Each electron transfers its kinetic energy to the picture tubescreen upon impact. What is the power delivered to thescreen by the electron beam?Hint: What potential difference produced the field that acceleratedelectrons? This is an emf.
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