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Simple Potential Divider Circuit - Need help with voltages

Discussion in 'Electronics Homework Help' started by ElectStudent, Apr 25, 2014.

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  1. ElectStudent

    ElectStudent

    13
    0
    Apr 8, 2014
    Please see the diagram i have attached.
    What will be the voltages across the resistors?
    what effect does the 1.5V voltage supply have on the voltage across the resistors?

    V(midpoint between R1 and R2) = 7.5V, so does that mean V(r2) = 7.5?
     

    Attached Files:

  2. Laplace

    Laplace

    1,252
    184
    Apr 4, 2010
    The 9V divides between R1 & R2. However, the measured voltages referenced to ground are offset by 1.5V.
     
  3. ElectStudent

    ElectStudent

    13
    0
    Apr 8, 2014
    Thank you, so does that mean the 1.5V supply has no effect on the circuit apart from when measuring voltages?
     
  4. Laplace

    Laplace

    1,252
    184
    Apr 4, 2010
    Does any current flow through the 1.5V source? If so, what path does the current follow?
     
  5. ElectStudent

    ElectStudent

    13
    0
    Apr 8, 2014
    Oh i see, no current flows into the 1.5V source, so it has no effect. Thanks a lot for your help.
     
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