PHYS 1502Q Chapter Notes - Chapter 2, 3: European Route E40, Electric Flux, Electric Field
Document Summary
Coulomb"s law and the superposition principle allows us to define electric fields at any given point in space. Electric field by discrete point charges - e = k q r2. Compare spherically symmetric (point charge) example with cylindrically symmetric (infinite line of charge) example. The electric field at point charge 2 due to point charge 1 is constant (electric field due to point charge 1) Energy is stored in electric field, information about changes in the charge distribution is transmitted through space viable the field at a finite speed (speed of light) Electric field at point p due to charge q is in the same direction as if a charge +q was at. F = k q r2 r point p. Magnitude of electric field depends only on r. Spherical symmetry causes the field to be the same at all angles around the point charge at the same distance r.
