How long does it take an electron to move from a cathode to a phosphorus TV screen 30 cm away, under an applied voltage of 15kV? What is the final velocity, momentum, and kinetic energy? Sketch the potential energy (in eV) as seen by the electron between the cathode and screen. Assume the screen is grounded. Plot curves for the Kinetic Energy and Total Energy-sketching by hand! Demonstrate how one can calculate the Force on the electron from your sketch. Did you label your axes on all graphs?

University Physics Volume 2
18th Edition
ISBN:9781938168161
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Chapter7: Electric Potential
Section: Chapter Questions
Problem 41P: An electron is to be accelerated in a uniform electric field having a strength of 2.00106 V/m. (a)...
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1. How long does it take an electron to move from a cathode to a phosphorus TV screen 30 cm away,
under an applied voltage of 15kV? What is the final velocity, momentum, and kinetic energy? Sketch
the potential energy (in eV) as seen by the electron between the cathode and screen. Assume the screen
is grounded. Plot curves for the Kinetic Energy and Total Energy-sketching by hand! Demonstrate
how one can calculate the Force on the electron from your sketch. Did you label your axes on all
graphs?
Transcribed Image Text:1. How long does it take an electron to move from a cathode to a phosphorus TV screen 30 cm away, under an applied voltage of 15kV? What is the final velocity, momentum, and kinetic energy? Sketch the potential energy (in eV) as seen by the electron between the cathode and screen. Assume the screen is grounded. Plot curves for the Kinetic Energy and Total Energy-sketching by hand! Demonstrate how one can calculate the Force on the electron from your sketch. Did you label your axes on all graphs?
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