What is the outcome of a 10 dB power increase?

• A. A doubling of power
• B. A tenfold increase in power
• C. A quadrupling of power
• D. A fivefold increase in power

Answer: (B)

A 10 dB increase in power corresponds to a tenfold increase in power. This is based on the logarithmic nature of the decibel (dB) scale, which is used to express ratios of power.

In this case, a change of 10 dB can be calculated using the formula where each 10 dB increase results in a power increase by a factor of 10. This means that if you start with a certain amount of power, a 10 dB increase means you multiply that power by 10. For example, if the original power is 1 watt, after a 10 dB increase, the power would be 10 watts.

Understanding this concept is crucial in the field of radio communications, as it helps in analyzing how different levels of power can impact signal strength, coverage area, and overall performance of a communication system.