Question
Download Solution PDFThe voltage gain of the amplifier shown below is :
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The given circuit is an inverting amplifier using an operational amplifier (op-amp). In this configuration, the non-inverting terminal is grounded, and input is applied through resistor R1 to the inverting terminal. Resistors R2 and R3 form a voltage divider in the feedback path.
Calculation:
Since R2 and R3 are connected in parallel to ground, their equivalent resistance is:
\( R_f = R_2 \parallel R_3 = \frac{R_2 R_3}{R_2 + R_3} \)
The gain of an inverting amplifier is given by:
\( A_v = -\frac{R_f}{R_1} = -\frac{R_2 \parallel R_3}{R_1} \)
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