Question
A radio receives a signal on its antenna of $2 \mu \mathrm{V}$, and we want to deliver 20 watts of power to an 8 -ohm speaker. What is the voltage gain of the entire system?
Step 1
The problem states that we want to deliver 20 watts of power to an 8-ohm speaker. Show more…
Show all steps
Your feedback will help us improve your experience
Salamat Ali and 52 other educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
In audio and communications systems, the gain, $\beta,$ in decibels is defined as $$\beta=10 \log \left(\frac{P_{\text { out }}}{P_{\text { in }}}\right)$$ where $P_{\text { in }}$ is the power input to the system and $P_{\text { out }}$ is the power output. A particular stereo amplifier puts out 125 $\mathrm{W}$ of power for an input of 1.0 $\mathrm{mW} .$ What is its gain in $\mathrm{dB}^{2}$ .
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD