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• What is the term used to describe the flow of electric charge in a circuit?

  Current
• What is the unit of measurement for current?


  Amps
• What is the purpose of a switch in a circuit?


  To open or close the circuit
• What does a cell do in a circuit?


  It provides electrical energy
• What is the difference between a cell and a battery?


  A battery consists of multiple cells
• What does a lamp do in a circuit?


  It converts electrical energy into light
• What is the function of a voltmeter?


  To measure potential difference
• What is the function of an ammeter?


  To measure current
• What are the characteristics of a series circuit?


  • Components arranged in a single loop
  • If one component breaks, all others go off
  • Current is the same everywhere
• What are the characteristics of a parallel circuit?


  • Components arranged on branches
  • If one component on a branch breaks, others still work
  • Current is shared among branches
  • Potential difference is the same on each branch
• What happens to current in a series circuit if one component breaks?


  All components will go off
• What happens to current in a parallel circuit if one component breaks?


  Other components on different branches still work
• What is static electricity?


  It is the build-up of electric charge on the surface of objects
• What occurs when two objects are rubbed together in terms of static electricity?


  Electrons can move from one substance to another
• What happens when you rub a balloon on your sweater?

  The balloon can stick to the wall or your hair due to static electricity
• What is the relationship between like and opposite charges?


  Like charges repel, opposite charges attract
• How is current defined in a circuit?


  As a measure of the rate of charge flowing through a circuit
• What is potential difference?


  The difference in energy between two parts of a circuit
• How is potential difference measured?


  In Volts using a voltmeter
• What is resistance?


  A measure of how hard it is for charge to flow
• How is resistance measured?


  In Ohms
• What are the key concepts related to electricity covered in this material?

  • Current: flow of charge, measured in Amps
  • Potential difference: energy difference, measured in Volts
  • Resistance: opposition to charge flow, measured in Ohms