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miv72 [106K]
3 years ago
15

The signal to a speaker causes .5 amps of current. The signal level is increased to 2.5 amps. What is the gain, rounded to the n

earest decibel?
Physics
1 answer:
devlian [24]3 years ago
7 0

Explanation:

It is given that,

The signal to a speaker causes 0.5 amps of current, I_1=0.5\ A

The signal level is increased to 2.5 amps, I_2=2.5\ A

We need to find the gain to the nearest decibel. The decibel gain formula of the speaker is given by :

db=20\ log(\dfrac{I_2}{I_1})

db=20\ log(\dfrac{2.5}{0.5})

db = 13.97 db

or

db = 14 db

So, the gain pf the speaker is 14 db. Hence, this is the required solution.

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