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course Phy 202
12/10 3
PhET Explorations: Electric Field of DreamsPlay ball! Add charges to the Field of Dreams and see how they react to the electric field. Turn on a background electric field and adjust the
direction and magnitude.
Figure 18.21 Electric Field of Dreams ( http://cnx.org/content/m42310/1.5/efield_en.jar )
As I added more particles to the box, I noticed that the particles were repelled from each other. They would never touch each other and they were attracted to the empty space between particles. When I adjust the background electric field, the particles want to move in the opposite direction as the field is pointing. In a neutral electric field, the particles are able to move more freely. As I increase the negative charge on the particles, it is evident that they are even father repelled from each other. Increasing the mass of the particles seems to increase their velocity.
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Well done.
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