NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
September 22, 2014, 07:07:04 pm *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
 
   Home   Help Search Login Register  
"Progress, therfore, is not and accident,¡K" ..."Herbert Spencer(1820-1903, British philosopher)"
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
  Print  
Author Topic: Ejs Open Source Electric Field & Potential of 2 Charged Particles Java Applet  (Read 6209 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
lookang
Moderator
Hero Member
*****
Offline Offline

Posts: 1728


http://weelookang.blogspot.com


WWW
«
Embed this message
on: July 27, 2010, 09:01:16 pm »

Ejs Open Source Electric Field & Potential of 2 Charged Particles Java Applet
Ejs Open Source Electric Field & Potential of 2 Charged Particles Java Applet by Professor Andrew Duffy, remixed by lookang

Ejs open Source Electric Field and Potential in a One-Dimensional of 2 Charged Particles Java Applet
In this simulation, you can investigate the electric field and the electric potential at various positions along a line, when there are either one or two charged particles on that line. In particular, you can explore the connection between the field and the potential.
The field and potential are represented in two ways. First, the table at the bottom shows the values of the electric field and electric potential at the position of the point charge. Values are given for the field and potential due to each charged particle individually, as well the net values.
The second way to represent the field and potential is graphically. You can look at both the graph of the electric field as a function of position, as well as the graph of the electric potential as a function of position. The graphs are probably most helpful in determining how field and potential are connected.
In addition, the arrows attached to the movable test charge show the field at the position of the test charge from the two charged particles.

Activities
This is challenging, but see if you can determine how field and potential are connected to one another. A good place to start is by turning on both of the charged particles, and giving them the same sign. This gives a place between the two particles where the net electric field is zero. At that same point, what is going on with the potential? Can you use that information to help you figure out how field and potential are related to one another?

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)
Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ 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!

« Last Edit: August 03, 2011, 01:48:30 pm by lookang » Logged
lookang
Moderator
Hero Member
*****
Offline Offline

Posts: 1728


http://weelookang.blogspot.com


WWW
«
Embed this message
Reply #1 on: July 27, 2010, 09:07:16 pm »

Java Applet.
I did not make this applet, Andrew Duffy http://physics.bu.edu/~duffy/classroom.html is the creator! i only remixed it. It is exactly what we need in the Singapore syllabus as well. nice!
mirror here as well http://66.7.205.91/~lookangc/index.php?topic=1052.msg2072#msg2072

changes made: was at the airport after 2010 AAPT Summer Meeting in Portland, Oregon, at PDX airport from 11 pm 21July to 6 am 22July, made used of the time to customized this applet.
1 redesign the look and feel to be all buttons and slider on the bottom panel
2 color scheme for red is + charges, blue (64,64,250) for - charges even visible for the slider now
3 resized to 600,600 for http://sgeducation.blogspot.com/ http://sgeducation.blogspot.com/2010/07/ejs-open-source-electric-field.html
4 added forces F1 an F2 when show2&&testc==false
5 added symbolic representation of Enet and Vnet
29Sept2010
6 added KE = 0.5*m*v^2 ; PE = q*Vnet; TE = KE+PE; due to question by leeyiren http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1965.new#new
03 August 2011
made some changes add input field to support the sliders
rearrange the check box
add a step () button
add color codes for the test charge as well, red = +, blue = - grey = 0
add range of view if test change move outside current xmin and xmax using the codes
Code:
if ( xtest < xmin ) xmin = xmin*1.2;
if ( xtest > xmax ) xmax = xmax*1.2;
make the graphs to plot to go to xmin and xmax instead of the older -6 and 6 range
« Last Edit: August 03, 2011, 01:50:09 pm by lookang » Logged
Pages: [1]   Go Up
  Print  
"Progress, therfore, is not and accident,¡K" ..."Herbert Spencer(1820-1903, British philosopher)"
 
Jump to:  


Related Topics
Subject Started by Replies Views Last post
Ejs Open Source Gravitational Field & Potential of 2 Mass Java Applet
Collaborative Community of EJS
lookang 12 9202 Last post June 28, 2012, 08:17:32 am
by lookang
Ejs Open Source Gravitational Field & Potential of Earth and Moon Java Applet
Collaborative Community of EJS
lookang 8 9949 Last post June 28, 2012, 09:09:29 am
by lookang
Ejs Open Source 2 Charge Model with Field Vector, Field Lines, Potential Visual
Collaborative Community of EJS
lookang 12 7845 Last post August 15, 2013, 07:41:28 am
by lookang
Ejs Open Source 2 Mass Model with Gravity Field Vector, Field Lines, Potential
Collaborative Community of EJS
lookang 1 3415 Last post September 06, 2011, 06:40:27 pm
by lookang
Ejs Open Source 2D Charge Particles Model java applet
Collaborative Community of EJS
lookang 0 1517 Last post September 23, 2013, 04:10:18 pm
by lookang
Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 0.295 seconds with 23 queries.since 2011/06/15