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Homework Help: Op amps

  1. Jan 4, 2009 #1
    1. The problem statement, all variables and given/known data
    An experiment to monitor the sound level in a room is to be conducted using a
    microphone.

    The microphone (output impedance = 1 kO) produces a maximum amplitude of 5 mV
    when connected to an oscilloscope (input impedance = 1 MO). If RI = 1 kO what
    amplitude will the input signal have when connected to the amplifier circuit and why?


    2. Relevant equations


    Gain = R2/R1
    3. The attempt at a solution
    I know the above equation an that input impedence should be high and output low
    any help appreciated thansk
     
  2. jcsd
  3. Jan 4, 2009 #2
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