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Author Topic: Electric field structure and Field lines for two point charges +/-  (Read 5801 times)
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ahmedelshfie
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on: April 27, 2010, 06:33:33 pm » posted from:,,Brazil

The following is a simulation created by prof Hwang
Modified by Ahmed
Original project Electric field structure and Field lines for two point charges +/-

You can drag either charge and find out the new electric distribution.
-*-

The field line are calculated in real time. However, please remember field line is not the same as trajectory for a test charge move in the same field.
You can add test charge if the check box were checked and watch the trajectory of test charge.

It is easy to draw those vectors which represent electric field at different positions.
Because we can calculate the electric field with \vec{E}=\frac{kq_1}{r_1^2}\hat{r_1}+ \frac{kq_2}{r_2^2}\hat{r_2}.
However, do you know how those field lines were calculated?

Hint: The tangential components of electric field line is the same as the firection of electric field at the same point.

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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
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Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!


* Electric field structure and Field lines.gif (47.42 KB, 775x628 - viewed 696 times.)
« Last Edit: April 27, 2010, 06:35:12 pm by ahmedelshfie » Logged
ahmedelshfie
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Reply #1 on: April 27, 2010, 08:22:26 pm » posted from:,,Brazil

Images from  http://en.wikipedia.org/wiki/Magnetic_field


* 220px-Magnetic_ring_dipole_field_lines.svg.png (12.52 KB, 220x220 - viewed 479 times.)

* 310px-Earths_Magnetic_Field_Confusion.svg.png (30.81 KB, 310x291 - viewed 473 times.)
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