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Analog ElectronicsMultistage Amplifiers

If two cascaded stages provide 20 dB and 30 dB voltage gain respectively, their total gain in decibels is?

  • A10 dB
  • B25 dB
  • C50 dB
  • D600 dB
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Correct Answer: C. 50 dB
Explanation: For cascaded stages, gains expressed in decibels add, so total gain is 20+30=50 dB.
Reference: Standard analog electronics: cascaded dB gain
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