Cathode-ray tube: Error in a book?

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SUMMARY

The discussion centers on a perceived error in the 9th edition of the Serway physics textbook regarding the direction of force acting on an electron in a cathode-ray tube. The original poster initially believed the force acted downward, but upon further review, they recognized their mistake and clarified that the force actually acts upward, consistent with the right-hand rules provided in the book. This highlights the importance of correctly applying the right-hand rule in magnetism to determine the direction of forces on charged particles.

PREREQUISITES
  • Understanding of magnetism principles
  • Familiarity with the right-hand rule in physics
  • Basic knowledge of cathode-ray tube operation
  • Experience with the Serway physics textbook series
NEXT STEPS
  • Review the right-hand rule applications in electromagnetism
  • Study the operation principles of cathode-ray tubes
  • Examine common misconceptions in magnetism
  • Explore additional resources on force direction for charged particles
USEFUL FOR

Students studying physics, educators teaching magnetism concepts, and anyone interested in the operational principles of cathode-ray tubes.

belyi00
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Hello. I was studying magnetism with the 9th edition of the Serway book and I think that I've found a mistake. In the cathode ray tube example (one of the uploaded pictures) it is said that the force acting on a electron goes downward, but using both right hand rules that they provide in the book - all I understand is that it goes upward. The right hand rules are in the uploaded pictures too. Can anyone help me with this?
 

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I found my mistake, sorry for posting.
 

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