Exam-style question
Try this first
Which of the following best describes the output of a summing amplifier when all inputs are zero?.
- A.The output is zero
- B.The output is positive
- C.The output is negative
- D.The output is equal to the supply voltage
Model answer
What a good answer should say
- The output is zero
Explanation
Why this works
When all input signals to a summing amplifier are zero, the output will also be zero, as there are no signals to sum.
Common mistake
No common mistake is linked to this question yet.