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Understanding Induced Dipole Moments and Electric Fields in Atomic Physics

This article explores the concepts of induced dipole moments, particularly in helium atoms, and how electric fields influence charge distributions. Key equations are presented, illustrating the dipole moment's dependence on electric fields and charges. The role of electrons as charge carriers in materials like copper is discussed in relation to their movement within conductive coils and windings. This foundational understanding is essential for applications in electronics and atomic physics, shedding light on the interactions that occur at microscopic levels.

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Understanding Induced Dipole Moments and Electric Fields in Atomic Physics

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  1. iron core BFe HFe Bgap Hgap gap region i coil windings Bair Hair

  2. thickness t width L q = - e area A electrons are the charge carriers in copper

  3. + + + + + + + + + dy + + + + + + + + + F - - - - - - - - - -q +q

  4. Induced dipole moment – helium atom +2e +2e -e -e -e -e Zero electric field – helium atom symmetric  zero dipole moment A B effectively charge +2e at A and -2e at B dipole moment p = 2ed

  5. Er E P r2  r + (d/2)cos r1  r – (d/2)cos r (d/2)cos  +q -q

  6. dA +f + + + + + + + + +  -b   +b  - - - - - - - - - -f

  7. -q +q

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