An audio amplifier, represented by the AC source and theresistor R delivers alternating voltages at audio frequencies tothe speaker.If the source puts

Bergen

Bergen

Answered question

2021-03-11

An audio amplifier, represented by the AC source and theresistor R delivers alternating voltages at audio frequencies tothe speaker.If the source puts out an alternating voltage of 15.0V(rms),the resistance R is 8.20, and the speaker is equivalent to aresistance of 10.4, what is the time-averaged power delivered tothe speaker?

Answer & Explanation

Derrick

Derrick

Skilled2021-03-13Added 94 answers

Vrms=15V
R1=8.2ohms
R2=10.4ohms
Rtotal=8.2+10.4=18.6 ohms
Irms=Vrms/R=15v/18.6 ohms=0.8A
Pav=(I)2rmsR (here it is I square)
Pav=(0.8)2(10.4) 

Pav=6.76w

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