electric-field-lines-dipole-point-charges-parallel-plates-spherical-conductor-physics

# Interactive video lesson plan for: Electric Field Lines, Dipole, Point Charges, Parallel Plates, & Spherical Conductor, Physics

#### Activity overview:

This physics video tutorial explains how to draw the electric field lines that emanate from a positive and a negative point charge, an electric dipole, two oppositely charged parallel plates, and a metal conductor in the presence of an external electric field. It also discusses the behavior of an electron and proton inside an electric field. A proton feels a force that will accelerate it in the direction of the electric field where has an electron will have an acceleration vector opposite to the applied electric field. The velocity of the charged particle is increasing whenever the acceleration vector is positive and the velocity is decreasing whenever acceleration is negative. The charged particle is speeding up whenever the acceleration and velocity vector have the same sign and it's slowing down when the signs are opposite. The strength of the electric field is also discussed in the video. The strength is greater when the electric field lines are spaced closer together and the electric field lines should never cross or intersect each other. The electric field inside two oppositely charged parallel plates is strong between the two plates and very weak outside of it. Placing a metal conductor inside the charged parallel plates will cause the metal to become polarized. The electrons travel toward the positive plate due to the external electric field which produces an induced electric field which opposes the original external electric field that created. In a state of equilibrium, the electric field inside a metal conductor becomes zero. This video contains plenty of examples and practice problems.

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