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Chapter 32: Q. 35 (page 925)
A resistor dissipates when the rms voltage of the emf is. At what voltage will the resistor dissipate
The voltage of the resistor at is =.
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A capacitor is connected across an AC generator that produces a peak voltage of . What is the peak current to and from the capacitor if the emf frequency is
(a) ?
(b)?
Figure Pshows a parallel RC circuit.
a. Use a phasor-diagram analysis to find expressions for the peak currents and .
b. Complete the phasor analysis by finding an expression for the peak emf current I.
The resonance frequency of a series circuit is Hz. What is the resonance frequency if:
a. The resistance is doubled?
b. The inductance is doubled?
c. The capacitance is doubled?
A capacitor is connected across an oscillating emf. The peak current through the capacitor is What is the peak current if:
a. The capacitance is doubled?
b. The peak emf is doubled?
c. The frequency is doubled?
The tuning circuit in an FM radio receiver is a series RLC circuit with a inductor.
a. The receiver is tuned to a station at . What is the value of the capacitor in the tuning circuit?
b. FM radio stations are assigned frequencies every , but two nearby stations cannot use adjacent frequencies. What is the maximum resistance the tuning circuit can have if the peak current at a frequency of , the closest frequency that can be used by a nearby station, is to be no more than of the peak current at ? The radio is still tuned to , and you can assume the two stations have equal strength.
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