Recent content by Dottywine

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    Electric Field of Dipole, straight line, ring, disk, shell, and sold sphere

    Homework Statement Okay, I totally do not understand how to derive the electric field made by a dipole or a line or a ring or etc. Homework Equations When finding the electric field, when you make an estimate, saying that the test charge is very far away, it should be similar to kQ/r^2...