What is Dielectrics: Definition and 153 Discussions

In electromagnetism, a dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field. When a dielectric material is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor, but instead only slightly shift from their average equilibrium positions, causing dielectric polarization. Because of dielectric polarization, positive charges are displaced in the direction of the field and negative charges shift in the direction opposite to the field (for example, if the field is moving parallel to the positive x axis, the negative charges will shift in the negative x direction). This creates an internal electric field that reduces the overall field within the dielectric itself. If a dielectric is composed of weakly bonded molecules, those molecules not only become polarized, but also reorient so that their symmetry axes align to the field.The study of dielectric properties concerns storage and dissipation of electric and magnetic energy in materials. Dielectrics are important for explaining various phenomena in electronics, optics, solid-state physics, and cell biophysics.

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  1. Rhdjfgjgj

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  2. S

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  3. V

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  4. C

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  5. P

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  6. L

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  7. V

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  8. bboo123

    I Exploring the Impact of Dielectrics on Electric Flux Density

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  9. Kaguro

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  10. R

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  11. A

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  12. F

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  13. A

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  14. Fnux

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  15. F

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  16. torito_verdejo

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  17. Hawkingo

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    [PAGE 1] [PAGE 2] [PAGE 3] so in the 2nd page,when the dielectric material is introduced the gauss's law becomes $$\oint _ { S } \vec { E } \cdot \vec { d S } = \frac { ( q - q _ { i } ) } { \epsilon _ { 0 } }$$.But my question is why the ##{ \epsilon _ { 0 } }## is in the equation.Shouldn't...
  18. A

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  19. maxipoblete

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  20. K

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  21. HelloCthulhu

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  22. Hieu

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  23. B

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  24. Alettix

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  25. A

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  26. C

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  27. G

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  28. Pushoam

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  29. Pushoam

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  30. A

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  31. N

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  32. Tania Velarca

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    Homework Statement Hi guys, I hope you can help me with this problem, because I do not have any idea and I could not find anything that could help me, thank you in advance! Draw the electric field lines due to a punctual charge Q immersed in a dielectric medium with constant K1. Q is separated...
  33. W

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  34. Leo Freeman

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  35. E

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  36. A

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  37. V

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  38. recursive

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  39. E

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  40. tommowg

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  41. E

    Modes orthogonality in a dielectric slab

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  42. X

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  43. B

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  44. E

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  45. fluidistic

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  46. S

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  47. Destroxia

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