NAME: ________________________

Chapter 21- electricity Test

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5 Written Questions

5 Matching Questions

  1. current
  2. when current flows through circuit
  3. positive
  4. object becomes neutral
  5. resistance
  1. a when you have a positive on one end and a negative on one end
  2. b the tendency of a material to oppose the flow electrons
  3. c the flow of electrons through a wire or any conductor
  4. d when an object causes it to repell or attract
  5. e when it's __________ it'll lose electrons

5 Multiple Choice Questions

  1. when it's __________ it'll gain electrons
  2. a circuit that has more than one path
  3. formula: V= I x R
  4. a build up of an electric charge on an object
  5. electrons will "jump" from a negatively charged object to a positively charged object

5 True/False Questions

  1. parts of a dry cellpositive charge, negative charge, plastic insulator, Zinc metal cap, chemical paste electrolytes, carbon rod


  2. electricityenergy made available by the flow of electric charge through a conductor


  3. wet cella battery that has paste-like electrolytes ex- AAA battery


  4. potential difference (V)toaster, light bulb


  5. invention- resistancethe tendency of a material to oppose the flow electrons


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