15.3 Electric Fields

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Electric Fields

F = qE          E = F / q
E = ke2          ke = 8.99×109 N • m2 / C2
• The SI unit is N/C.
• The electric field points in the same direction as the force experienced by a positive test charge.
• Electric field lines typically originate on positive charges and terminate on negative charges. In some cases, electric field lines may originate or terminate infinitely far away.
15.3 electric dipole