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Electricity and magnetism

Physics

After this lesson, you should be able to:

  • Determine the direction of the electric field at a point in space as that of the force on a positive test charge placed at that point
  • Draw electric field lines for various configurations of charges
  • Define the magnitude of the electric field at a point as the force per unit charge
  • Calculate the electric field at a point due to a number of point charges
  • Understand the concept of superposition of electric fields