The output resistance of the op-amp with feedback is
A. Same as that of the output resistance without feedback
B. Greater than that of the output resistance without feedback
C. Smaller than that of the output resistance without feedback
D. None of the mentioned
Answer:A
The output resistance of the op-amp with feedback is
A. Same as that of the output resistance without feedback B. Greater than that of the output resistance without feedback C. Smaller than that of the output resistance without feedback D. None of the mentioned
Explanation: In voltage series feedback amplifier, the output resistance is (1/(1+AB)) times the output resistance of the op-amp. Therefore, the output resistance of the op-amp with feedback is much smaller than the output resistance without feedback.