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lecture 12 101005 - Electric Field Line Patterns Point...

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Electric Field Line Patterns square6 Point charge square6 The lines radiate equally in all directions square6 For a positive source charge, the lines will radiate outward square6 For a negative source charge, the lines will point inward More Electric Field Line Patterns square6 An electric dipole consists of two equal and opposite charges square6 The high density of lines between the charges indicates the strong electric field in this region square6 Two equal but like point charges square6 At a great distance from the charges, the field would be approximately that of a single charge of 2q square6 The bulging out of the field lines between the charges indicates the repulsion between the charges square6 The low field lines between the charges indicates a weak field in this region Crazy Electric Field Patterns square6 Unequal and unlike charges square6 Note that two lines leave the +2q charge for each line that terminates on -q square6 On an irregularly shaped conductor, the charge accumulates at locations where the radius of curvature of the surface is smallest (that is, at sharp points) Conductors in Electrostatic Equilibrium
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