At the end of this lesson you should be able to:

• Know in simple terms the structure of an atom.
• Describe how one can show there are two types of electric charge.
• State Coulombs law from memory.
• Apply Coulombs law in numerical problems.
• State from memory the law of conservation of charge.
• Distinguish between an insulator, a conductor and a semi-conductor and give examples of such.
• Explain the concept of electric field and determine the resultant electric field at a point some distance from two or more point charges.
• Determine the magnitude and direction of the electric force on a charged particle placed in an electric field.
• Sketch the electric field patterns in the region between charged objects.
• Know the difference between electric field lines and electric forces.
• Know and understand the definition of electric flux.
• State Guass¹ Law in words and in mathematical terms and apply it to simple charge distributions.
• Know the charge distribution and electric fields associated with conductors in electrostatic equilibrium.