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Voltage across a broken lamp

  1. Nov 11, 2015 #1
    1. The problem statement, all variables and given/known data
    Why is the voltage across the broken lamp 12V?

    2. Relevant equations
    Can I assume the broken lamp is of infinite resistance?

    3. The attempt at a solution
    I understand the reading for the first voltmeter is 0V. But can anyone explain to me why the reading of the second voltmeter is 12V?
     
  2. jcsd
  3. Nov 11, 2015 #2

    andrevdh

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    That would be a good way to look at it yes. How would the voltages then divide over the two light bulbs if there was a very small current present and the other intact light bulb has a much smaller resistance?
     
  4. Nov 11, 2015 #3
    Most of the voltage will be across the broken one?
     
  5. Nov 11, 2015 #4

    andrevdh

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    Correct.
     
  6. Nov 11, 2015 #5
    Thank you!
     
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