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Finding closed loop gain and Ip and In current in op amp

  1. Apr 16, 2017 #1
    1. The problem statement, all variables and given/known data
    Finding closed loop gain and Ip and In current in op amp

    2. Relevant equations
    -
    3. The attempt at a solution
    I started by trying getting voltage divider for points between R1 and R2 as (R2/(R2+R1))Vs and between R4 and R5 similarly. And I'm not sure how to continue on. Any help would be greatly appreciated.

    Thanks! Full questions uploaded
     

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  2. jcsd
  3. Apr 17, 2017 #2

    gneill

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    Staff: Mentor

    Assuming the simplifying properties of an ideal op-amp, what can you say about the current through R1? What then must be the potential at the junction of R1 and R2?
     
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