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5 Written questions

5 Multiple choice questions

  1. two ends of a magnet where the magnetic forces are strongest
  2. temporary magnet made by passing an electric current through a wire coiled around an iron bar
  3. the lines of force surrounding a permanent magnet or a moving charged particle
  4. the force that causes magnets to pull on objects that are made of certain metals, such as iron
  5. current in which electrons constantly change direction at a regular rate

5 True/False questions

  1. solenoida current-carrying coil of wire with many loops that acts as a magnet


  2. transformera device used to measure electrical current.


  3. direct currentElectrical current that flows in only one direction through a wire


  4. generatorattached to the armature in a motor; changes the direction of the electric current


  5. electromagnet inductionThe process by which moving a wire through a magnetic field produces an electric current