In what direction does the sphere move between two positive charges

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SUMMARY

The discussion focuses on the behavior of a dielectric material in the presence of electric fields generated by two positive charges. Specifically, it addresses the polarization of dielectrics and how they interact with electric fields, particularly in relation to question 26 of the homework. The user clarifies that while dielectrics do not eliminate electric fields, they can become polarized, leading to bound surface charges that influence the overall electric field. The analogy of a charged balloon attracting a wall is used to illustrate this concept effectively.

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Homework Statement



http://www.screencast.com/users/trinhn812/folders/Jing/media/8fe997e1-46e5-4033-a246-fbad0acb7162

Homework Equations





The Attempt at a Solution



I understand that in question 25, the conductor becomes polarized and its negative charges will be more attracted toward the bigger 5uC charge, but what's the reasoning for question 26? I don't get why the answer isn't C. Don't dieletrics kill the electric field?
 
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The dielectric can be polarized. So you can also have surface charges, but instead of them being free, they are now bound. Then you will get a surface charge density much like the conductor but much smaller in magnitude.

EDIT: Very similar to a balloon that you statically charge then hold it near a wall. The wall is a dielectric and will be attracted to the charged balloon.
 
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