An audio amplifier represented by the ac source and the


An audio amplifier, represented by the AC source and the resistor R, delivers alternating voltages at audio frequencies to the speaker. If the source pots out an rms voltage of 21.0 V, the resistance is 9 Ohms and the resistance of the speaker is 11.0 Ohms what is the average power input into the speaker?

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Physics: An audio amplifier represented by the ac source and the
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