A simple and common technique for accelerating electrons is shown, where there is a uniform electric field between two plates. Electrons are released,usually from a hot filament, near the negative plate, and there is a small hole in the positive plate that allows the electrons to continue moving. (a) Calculate the acceleration of the electron if the field strength is 2.50×104 N/C . (b) Explain why the electron will not be pulled back to the positive plateonce it moves through the hole. Figure 18.55 Parallel conducting plates with opposite charges on themcreate a relatively uniform electric field used to accelerate electrons tothe right. Those that go through the hole can be used to make a TV orcomputer screen glow or to produce X-rays.

given: Electric field strength . E = 2.54 x 104 N/C

Answered: Figure 18.55 Parallel conducting plates…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter5: Electric Charges And Fields

Section: Chapter Questions

Problem 82P: Two thin conducting plates, each 25.0 cm on a side, are situated parallel to one another and 5.0 mm...

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A simple and common technique for accelerating electrons is shown, where there is a uniform electric field between two plates. Electrons are released,
usually from a hot filament, near the negative plate, and there is a small hole in the positive plate that allows the electrons to continue moving. (a) Calculate the acceleration of the electron if the field strength is 2.50×10⁴ N/C .
(b) Explain why the electron will not be pulled back to the positive plate
once it moves through the hole.

Figure 18.55 Parallel conducting plates with opposite charges on them
create a relatively uniform electric field used to accelerate electrons to
the right. Those that go through the hole can be used to make a TV or
computer screen glow or to produce X-rays.

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