Use Common Logarithms or Natural Logarithms and a Calculator to Evaluate

Multiple Choice

Use common logarithms or natural logarithms and a calculator to evaluate to four decimal places
-Use the mathematical model for power gain, $G = \log \left( \frac { P _ { 0 } } { P _ { i } } \right) ^ { 10 }$ , where $P _ { 0 }$ is the output power in watts and $P _ { i }$ is the input power in watts. Determine the power gain $\mathrm { G }$ , in decibels, for an amplifier with an output $\mathrm { P } _ { 0 }$ of 21 watts and an input $P _ { i }$ of $1.2$ watts. Round to five decimal places if necessary.

A) $12.43038 \mathrm {~dB}$
B) $12.96665 \mathrm {~dB}$
C) $13.43038 \mathrm {~dB}$
D) $14.01401 \mathrm {~dB}$