By what factor should the amplifier's output be increased to have a 100 dB increase in speaker output?
A)Two
B)Three
C)Five
D)Ten

Question

Quizplus · Accepted Answer

The amplifier's output should be increased by three to have a 100 dB increase in speaker output.
Key Takeaway: Decibel, or dB, is a logarithmic unit of measurement that expresses the magnitude of a physical quantity relative to a specified or implied reference level. It is a dimensionless unit and uses base-10 logarithms. A change in the ratio by a factor of 10 is a 10 dB change. A change in power ratio by a factor of 100 is approximately a 100 dB change which relates to tripling the quantity.

By What Factor Should the Amplifier's Output Be Increased to Have