What is the radius of the circular arc if the accelerating potential is tripled?

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SUMMARY

The radius of the circular arc for an electron accelerated through a potential difference V is directly related to the potential. When the accelerating potential is tripled to 3V, the radius of the arc increases to √3 R. This relationship is derived from the equations governing the motion of charged particles in electric and magnetic fields, specifically the interplay between electric potential, velocity, and magnetic force.

PREREQUISITES
  • Understanding of electric potential and its relationship to electric fields.
  • Knowledge of Lorentz force acting on charged particles in magnetic fields.
  • Familiarity with kinematic equations relating velocity and radius in circular motion.
  • Basic principles of electromagnetism, particularly regarding charged particle dynamics.
NEXT STEPS
  • Study the relationship between electric potential and kinetic energy of charged particles.
  • Learn about the Lorentz force and its effect on charged particles in magnetic fields.
  • Explore the derivation of the radius of curvature for charged particles in magnetic fields.
  • Investigate the effects of varying potential differences on particle trajectories in electromagnetic fields.
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Students and educators in physics, particularly those focusing on electromagnetism and particle dynamics, as well as anyone involved in experimental physics or engineering applications involving charged particles.

googlyeyes
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Homework Statement



An electron is accelerated from rest through a potential difference V and then enters a uniform magnetic field oriented perpendicular to its path. The field deflects the particle into a circular arc of radius R. If the accelerating potential is tripled to 3V, what will be the radius of the circular arc?

Homework Equations



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The Attempt at a Solution



The answer is √3 R, just not sure how to get there
 
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googlyeyes said:
The answer is √3 R, just not sure how to get there

1. What is the relationship between Electric field and potential difference V ?
2. What is the force on the electron as it moves through the region of potential difference V?
3. Find the relationship between the velocity of the electron just as it is about to enter the magnetic field , and the potential difference V ?
4.Find the relationship between the velocity of the electron in the magnetic field , and the radius of the circular arc.
 

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