​A Circuit Consists of an AC Audio Amplifier,a Resistor,and a Speaker,all

question 64

Multiple Choice

​A circuit consists of an AC audio amplifier,a resistor,and a speaker,all in series.The amplifier puts out an alternating voltage of 16.0 V (rms) ,the resistance of the resistor is 10.0 Ω,and the speaker has a resistance of 11.9 Ω.What is the time-averaged power delivered to the speaker?

• A)​21.5 W
• B)​30.5 W
• C)​6.35 W
• D)​8.69 W

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