How Is the Electric Field Value Estimated in a CRT Deflection Scenario?

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SUMMARY

The electric field value (E) in a CRT deflection scenario can be estimated using the principles of kinematics and electrostatics. Given that electrons are accelerated by 6.0 kV and travel through a uniform electric field for 3.1 cm, the upward deflection of 13 cm over a horizontal distance of 19 cm can be analyzed to calculate E. The relationship between the force acting on the electrons and the electric field intensity is crucial for this calculation, as the Lorentz force also plays a role in the deflection of charged particles in a CRT.

PREREQUISITES
  • Understanding of basic electrostatics and electric fields
  • Knowledge of kinematics, particularly projectile motion
  • Familiarity with the concepts of force and acceleration
  • Basic principles of CRT operation and electron behavior
NEXT STEPS
  • Calculate the force acting on electrons in an electric field using F = qE
  • Learn about the relationship between electric field strength and potential difference
  • Study kinematic equations to analyze projectile motion in electric fields
  • Explore the role of the Lorentz force in charged particle deflection in CRTs
USEFUL FOR

Students and professionals in physics, electrical engineering, and anyone interested in understanding the behavior of electrons in electric fields, particularly in CRT technology.

DLK
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I can't do this question. Please help me:(

In a given CRT, electrons are accelerated horizontally by 6.0kV . They then pass through a uniform electric field E for a distance of 3.1cm , which deflects them upward so they reach the screen top 19cm away, 13cm above the center.

Estimate the value of E.
 
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Have you tried drawing a diagram?

Make it systematic, draw all the forces that act on the electron. When the force is acting on an electron, it's velocity vector is changed. How? Can you calculate from the given information the force acting on the electron while passing through the electric field? How is that force related to intensity?

P.S. I thought that it was Magnetic field caused by coils with Lorentz force acting on the particles in a CRT.
 

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