For an OP-amp having differential gain Av and common mode gain Ac the CMRR is given by
A. $${{\text{A}}_{\text{V}}} + {{\text{A}}_{\text{C}}}$$
B. $$\frac{{{{\text{A}}_{\text{V}}}}}{{{{\text{A}}_{\text{C}}}}}$$
C. $${{\text{A}}_{\text{V}}} + \frac{1}{{{{\text{A}}_{\text{C}}}}}$$
D. $$\frac{{{{\text{A}}_{\text{C}}}}}{{{{\text{A}}_{\text{V}}}}}$$
Answer: Option B
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