Question

In an amplifier, the power gain, P is given by the function P=10log Pout/Pin, where Pin and Pout are the power input and output in watts. If an amplifier has a power gain of 22 watts and the output power was 15 watts, find the power input in watts.
a. 0.095
b. 10.53
c. 158.49
d. 2,377.34
e. none

Answer 1

a

Answer 2

It's simpler just to plug in the value of 0.095...which gets you ~21.98 = ~22 watts

Answer 3

22=10log(15/Pin)
Solve this and you'll get (a)

Answer 4

thank you

Answer 5

a)0.095