Author Topic: Charged particle motion in static Electric/Magnetic field  (Read 18807 times)

Fu-Kwun Hwang

  • Administrator
  • Hero Member
  • *****
  • Posts: 3062
    • Enjoy the fun of physics with simulations
Charged particle motion in static Electric/Magnetic field
« on: February 13, 2010, 12:52:04 pm »
The following simulation shows trajectory for a charged particle in electric and/or magnetic field.

$vec{F}=qvec{E}+qvec{v}   imesvec{B}$

The magnetic field B is always in Z direction in the simulation, however, you can change Ex,Ey or Ez with a slider.
The initial condition is $vec{B}=B_0 hat{z}, E=0 , vec{v}=v_0 hat{y}$ , so the result is a circular motion.

If you add E field, then you will find $vec{V_d}=frac{vec{E}   imesvec{B}}{|vec{B}|^2}$ (E cross B drift).
The particle will drift along $vec{V_d}$

Full screen applet or Problem viewing java?Add to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
  • Please feel free to post your ideas about how to use the simulation for better teaching and learning.
  • Post questions to be asked to help students to think, to explore.
  • Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!

You are welcomed to check out Charged particle motion in E/B Field