Which decibel value represents a power increase from 20 watts to 200 watts?
توضیح
Going from 20 watts to 200 watts is a tenfold increase, and 10 × log₁₀(10) = 10 dB exactly. Each additional factor of ten adds another 10 dB.
Going from 20 watts to 200 watts is a tenfold increase, and 10 × log₁₀(10) = 10 dB exactly. Each additional factor of ten adds another 10 dB.