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1			Electric power is distributed long distances over transmission lines by using high AC voltages and therefore small AC currents. What is the advantage of using high voltages instead of safer low voltages?
2			How does adjusting the tuning knob on a radio tune in different stations?
3			A European outlet supplies 220 V (rms) at 50 Hz. How many times per second is the magnitude of the voltage equal to 220 V?
4			A circuit breaker trips when the rms current exceeds 20.0 A. How many 100.0-W lightbulbs can run on this circuit without tripping the breaker? (The voltage is 120 V rms.)
5			The instantaneous sinusoidal emf from an AC generator with an rms emf of 4.0 V oscillates between what values?
6			At what frequency is the reactance of a 6.0-μF capacitor equal to 1.0 kΩ?
7			A 0.250-μF capacitor is connected to a 220-V rms AC source at 50.0 Hz. (a) Find the reactance of the capacitor. (b) What is the rms current through the capacitor?
8			At what frequency is the reactance of a 20.0-mH inductor equal to 18.8 Ω?
9			An RLC series circuit is connected to an AC power supply with a 12-V amplitude and a frequency of 2.5 kHz. If R = 220 W, C = 8.0 μF, and L = 0.15 mH, what is the average power dissipated?
10			An AC circuit contains a 12.5-Ω resistor, a 5.00-μF capacitor, and a 3.60-mH inductor connected in series to an AC generator with an output voltage of 50.0 V (peak) and frequency of 1.59 kHz. Find the impedance, the power factor, and the phase difference between the source voltage and current for this circuit.
11			In an RLC series circuit, these three elements are connected in series: a resistor of 60.0 Ω, a 40.0-mH inductor, and a 0.0500-F capacitor. The series elements are connected across the terminals of an AC oscillator with an rms voltage of 10.0 V. Find the resonant frequency for the circuit.
12			A capacitor to be used in a radio is to have a reactance of 6.20 Ω at a frequency of 520 Hz. What is the capacitance?