An amplifier has an input power of 5 mw. the output power is 100 mw. what is the decibel gain to the nearest decibel?

The decibel gain to the nearest decibel = 13 db

Explanation:

Gain of an amplifier: This is defined as the measure of the ability of an amplifier to increase the power of a signal from the input to the output port by adding energy converted from some power supply to the signal.

It is represented mathematically as.

db = 10×log (p₂/p₁) Equation 1

Where dp = decibel gain of the amplifier, p₁ = input power of the amplifier, p₂ = output power of the amplifier.

Given: p₁ = 5 mW, p₂ = 100 mW.

Substituting these values into equation 1

db = 10×log(100/5)

db = 10×log(20)

dp = 10 ×1.301

dp = 13 db gain

Therefore the decibel gain to the nearest decibel = 13 db

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..