Find a second frequency where the current in the speaker of Example 28.4 has half its maximum value.
EXAMPLE 28.4 An RLC Circuit: Designing a Loudspea
Current flows to the midrange speaker in a loudspeaker system through a 2.2-mH inductor in series with a capacitor. (a) What should the capacitance be so that a given voltage produces the greatest current at 1.0 kHz? (b) If the same voltage produces half this current at 618 Hz, what is the speaker’s resistance? (c) If the peak output voltage of the amplifier is 24 V, what will the peak capacitor voltage be at 1 kHz?
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