Calculate the CMRR of an op-amp having a common-mode gain of 10 and a differential- mode gain of 100,000 ___

Calculate the CMRR of an op-amp having a common-mode gain of 10 and a differential- mode gain of 100,000.

A. 1000 dB
B. 100 dB
C. 80 dB
D. 40 dB

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Answer: C

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