If the power level of an amplifier reduces to half, the db gain will fall by___________?
Correct answer: D. 3 dbTry Prep Courses
- A. 5 db
- B. 2 db
- C. 10 db
- D. 3 dbTry Prep Courses
Explanation
For power gain, the change in decibels is 10 log10(P2/P1). Halving the power gives 10 log10(1/2) ≈ -3 dB, so the gain falls by about 3 dB.
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