A gain of 1,000,000 times in power is expressed by_____________?
Correct answer: B. 60 db
- A. 30 db
- B. 60 db
- C. 120 db
- D. 600 db
Explanation
Power gain in decibels is 10 log10(Ap), so 10 log10(1,000,000) = 10×6 = 60 dB. The factor of 20 is used for voltage or current ratios, not power ratios.
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