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Electricity and magnetism


After this lesson, you should be able to:

  • State Coulomb’s law and express it mathematically
  • Use Coulomb’s law to find the force exerted on a charge by one or more charges in one (1D) and two dimensions (2D)
  • Understand the concept of superposition of forces
  • Draw free-body diagrams showing the forces acting on a charge due to other charges
  • Link Coulomb’s law to Newton’s third law of motion
  • Compare Coulomb’s law to Newton’s law of universal gravitation