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Curcuits Electricity

  1. Sep 9, 2008 #1
    Why does a voltmeter have to be in parrallel??? Why not series?
  2. jcsd
  3. Sep 9, 2008 #2


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    Because a voltmeter measures a potential difference. A difference can only be measured if you have two things to compare. So the voltmeter must be connected to the two points whose potential you wish to compare.
  4. Sep 9, 2008 #3
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