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G5B01
What dB change represents a factor of two increase or decrease in power?
Pick an answer to check it.
Answer: B. Approximately 3 dB
A 3 dB change is about a doubling or halving of power, since 10 x log(2) = 3.01 dB. A 6 dB change is a factor of four in power.
Tip: 3 dB = double or half the power.