Deflection due to Magnetic Field

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SUMMARY

The discussion focuses on calculating the deflection of an electron beam in a tube TV set due to magnetic forces, specifically under a potential difference of V=30000V. The charge to mass ratio of the electron is given as 175824175824.176 C/kg. The key equations used include R = mv/qB and R = (m/eB)√(2eVacc/m). The participants express confusion regarding the definition of the "end of the magnetic field region" and the necessary magnetic field to achieve a specified deflection.

PREREQUISITES
  • Understanding of electron beam physics
  • Familiarity with magnetic fields and forces
  • Knowledge of potential difference and its effects on charged particles
  • Proficiency in using the equations of motion for charged particles in magnetic fields
NEXT STEPS
  • Calculate the required magnetic field strength for a given deflection using the equation R = mv/qB
  • Explore the effects of varying potential differences on electron beam trajectories
  • Investigate the relationship between magnetic field length and deflection distance
  • Learn about the practical applications of electron beam deflection in CRT technology
USEFUL FOR

Physics students, electrical engineers, and anyone interested in the principles of electron beam manipulation and magnetic field interactions.

Alouette
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Homework Statement


The deflection of the electron beam in an old-fashioned tube TV set is accomplished by magnetic forces. Each electron is accelerated through a potential difference of V=30000V. The charge to mass ratio of the electron is 175824175824.176C/kg.

If there is a x2=0.1m gap between the end of the magnetic field region and the end of the tube, how far from the center of the screen does the beam strike?

ynet = y1 + y2 =


Homework Equations


R = mv/qB

R = (m/eB)*√(2eVacc/m)


The Attempt at a Solution


I'm not even sure where to begin. The first thing I'm confused by is what do they mean by end of magnetic field region?
 
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Im having the same problem as above with the same question.
it just that the question above seem to be missing a line of information which is
What magnetic field is required to produce a deflection of y1=0.03m if the magnetic field region is x1=0.065m long?
 

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