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Analog ElectronicsAmplifier Fundamentals

For cascaded amplifier stages having voltage gains of 20 dB and 30 dB, the total voltage gain in decibels is?

  • A10 dB
  • B25 dB
  • C50 dB
  • D600 dB
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Correct Answer: C. 50 dB
Explanation: Cascaded gains multiply in linear units, so their decibel gains add: 20 + 30 = 50 dB.
Reference: Standard analog electronics: amplifier fundamentals
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