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Answers
  1. A circuit with three bulbs in parallel so that one switch will switch them all on or off at once.
  2. A circuit with three bulbs in parallel so that each has an individual switch to switch it off or on.
  3. A circuit with three bulbs in parallel so that each has an individual switch to switch it off or on and there is a master switch that can switch them all off.
  4. A circuit with three bulbs in series so that one switch will switch them all on or off at once.
  5. A circuit with three bulbs in series so that one switch will switch one of them on or off. (the bulb is 'shorted' out).
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