Unformatted text preview: rotating a knob. The angular frequency of the circuit then matches the broadcast frequency. All AM radio stations broadcast between 5.30×10 5 Hz and 1.71×10 6 Hz. If the receiver uses a 5.00×10 −3 H inductor, what is the range of capacitance needed to receive all possible AM radio stations? 1. The emf of an AC circuit has an rms value of 120 V. (a) What is the maximum positive emf? (b) What is the most negative emf? 1. If the maximum current in an AC circuit is 9.00 A, what is the rms current? 1. An electrical appliance draws an rms current of 10.0 A and has an average heat dissipating power of 20 W when connected to a power source with an rms emf of 120 V at 60.0 Hz. The appliance could be analyzed as a series combination of a resistor, a capacitor and an inductor. (a) what is the value of the series resistance? (b) What is the impedance of the appliance?...
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 Spring '08
 Ye
 Charge, Current, Magnetism, Work, Alternating Current, Resistor, Inductor, Electrical resistance, Electrical impedance

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