A CMRR of 10000 expressed in decibels is?

  • A40 dB
  • B60 dB
  • C80 dB
  • D100 dB
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Correct Answer: C. 80 dB
Explanation: CMRR(dB)=20log10(10000)=20×4=80 dB.
Reference: Standard measurements and instrumentation: signal conditioning