Computers and Technology, 31.12.2020 01:00 kaitlyn0123

The attenuation of a signal is -10 dB. What is the final signal power if it was originally
5 W?

Answers: 2

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Answer from: nessamayjuniorp2b9yc

The final signal power if it was originally 5W is; 0.5 W

Signal Power

We are given;

Attenuation signal; dB = -10 dBOriginal signal power; P1 = 5 W

Formula for attenuation signal is;

dB = 10log_10_ (P2/P1)

Where P2 is final signal power

Thus;

-10 = 10log_10_(P2/5)

-10/-10 = log_10_(P2/5)

-1 = log_10_(P2/5)

0.1 = P2/5

P2 = 0.1 × 5

P2 = 0.5 W

Read more about signal power at; link

Answer from: farrellandnandi

P₂ = 0.5 W

Explanation:

It is given that,

The attenuation of a signal is -10 dB.

We need to find the final signal power if it was originally 5 W.

Using attenuation for signal :

$dB=10\text{log}_{10}(\dfrac{P_2}{P_1})$

Put dB = -10, P₁ = 5 W

Put all the values,

$-10=10\text{log}_{10}(\dfrac{P_2}{5})\\\\-1=\text{log}_{10}(\dfrac{P_2}{5})\\\\0.1=\dfrac{P_2}{5}\\\\P_2=5\times 0.1\\\\P_2=0.5\ W$

So, the final signal power is 0.5 W.

Answer from: Quest

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Answer from: Quest

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