Exam-style question
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In a summing amplifier, what role do input resistors play?.
- A.They determine the output voltage
- B.They set the gain of the amplifier
- C.They combine the input signals
- D.They filter the input signals
Model answer
What a good answer should say
- They set the gain of the amplifier
Explanation
Why this works
Input resistors in a summing amplifier define the gain for each input signal, allowing for control over how much each signal contributes to the output voltage.
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