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2 Questions on Ohm's Law and Power

  1. Mar 2, 2005 #1
    If a single lamp has resistance of 3 ohms, and a second and third identical lamp is added wouldn't the second be 6, and third be 9.
    If a part of an electric circuit diaaipates energy at 6 when it draws a current of 3A, what voltage is impressed across it? What does 6 represent :surprised
     
  2. jcsd
  3. Mar 2, 2005 #2

    dextercioby

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    How are the 2 lamps "added",in series,in parallel,mixed...?

    As for the second,i think they mean 6W,thoough i'm not sure.

    Daniel.
     
  4. Mar 2, 2005 #3
    Daniel,
    The question is as followed: In a simple circuit 6-volt dry cell pushes charge through a single lamp whiich has a resistance of 3 ohms. the current through the circiut is 2 amps.
    If a second identical lamp is connected in series, the 6 volt battery must push a charge through a total resistance of how many ohms. Same for third identical lamp
     
  5. Mar 2, 2005 #4

    dextercioby

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    Well,what do you think...?What do you know about series coupled resistors...?What's the equivalent resistance...?

    Daniel.
     
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