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5 Written questions

5 Multiple choice questions

  1. two ends of a magnet where the magnetic forces are strongest
  2. a current-carrying coil of wire with many loops that acts as a magnet
  3. attached to the armature in a motor; changes the direction of the electric current
  4. the lines of force surrounding a permanent magnet or a moving charged particle
  5. current in which electrons constantly change direction at a regular rate

5 True/False questions

  1. direct currentcurrent in which electrons constantly change direction at a regular rate

          

  2. magnetismthe lines of force surrounding a permanent magnet or a moving charged particle

          

  3. transformerA device that can increase or decrease the voltage of an alternating current.

          

  4. electric motora device that contains a rotating electromagnet that changes electrical energy to mechanical energy

          

  5. electromagnet inductiontemporary magnet made by passing an electric current through a wire coiled around an iron bar

          

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