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maximum peak output voltage ܸ. (20%)2.As shown in Figure 2, the engineer decides to connect the output of the Wheatstone bridge directly to the input of a differential amplifier op amp circuit with an intended gain of ‐20. Unfortunately, it was found that the equivalent resistance of the Wheatstone bridge had significantly affected the gain of this circuit. a.Determine the equivalent resistance ܴ of the Wheatstone bridge circuit. You may ignore the effect of ∆ܴ from question (1) since it is typically very small. (10%)b.Find the true gain of the circuit (ೌ) after the equivalent resistance ܴ from part (a) is taken into account. (25%)c.Suggest a modification to the given amplifier circuit that would allow it to amplify the Wheatstone bridge output ܸ by the intended amplification factor more accurately. Note: Proof by calculations is NOT required in this question. (10%)3.The output ܸ of the circuit in Figure 2 is then connected to a filter circuit. This filter circuit exhibits the transfer function: