When the frequency of an ac circuit is increased at constant voltage, the current increases and then decreases. Which combination of elements is most likely to comprise this circuit? capacitors only O resistors only inductors only a combination of inductors and resistors a combination of inductors and capacitors
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- An AC voltage source, with a maximum voltage of 200 V, is connected across a 50 Ω resistor. What is the power dissipated in the resistor?You connect a 100-Ω resistor, a 800-mH inductor, and a 10.0-μF capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate resonant frequency of your circuit is Group of answer choices 37 Hz 60 Hz 354 Hz None of these is correct. 56 HzConsider the circuit shown in the figure. If the peak voltage of the AC source is VAC max = 100 V, and the ideal transformer has N1 = 80 turns on the primary side and N2 = 120 turns on the secondary side, what is the peak current that flows through the load if its resistance is R = 40 Ω? 2.5 A 5.6 A 1.7 A 3.8 A
- Write an expression for the output voltage of an ac source that has an amplitude of 8 V and a frequency of 100 Hz. Use t as the variable for time in seconds, and assume that V(t = 0) = 0V. V(t) =Complete the following table that describes the circuit in the attached image. The properties of the circuit are: Resistance: 10 ohm Capacitance: 0.05 F Inductance: 13 H Voltage Amplitude: 60V Frequency (Hz) RMS Current (A) RMS Voltage (V) Average Power (W) 0.1 1.65 42.42 0.4 0.5The 60 Hz ac source of a series circuit has a voltage amplitude of 120 V. capacitive and inductive reactances are 940 omega and 210 omega. resistance is 440 omega. in figure, inductance is i) 1,300 ii) 3,500 iii) 2,600 iv) 2,100 v) 560
- An AC circuit has an rms current of 1.9 A, and an rms EMF of 7.1 V. What is the amount of average power (in watts) in this circuit if the power factor is 0.18?In the analogy between an RLC circuit and a mass on a spring moving through a viscous fluid, which element in the RLC circuit represents the spring? O the resistor O the capacitor O the inductor O the power supplyWhen a 2.0 µF capacitor is connected to a generator whose rms output is 34 V, the current in the circuit is observed to be 0.33 A. What is the frequency of the source? 772.4 Hz 2,426.5 Hz 594.1 Hz 1,544 Hz none
- Is it possible to use a voltmeter to measure non-sinusoidal AC voltage? Is it possible to use an oscilloscope (CRO)?A series circuit contains only a resistor and an inductor. The voltage V of the generator is fixed. If R = 142 and L = 5.4 mH, find the frequency at which the current is one-half its value at zero frequency. Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise. Number i eTextbook and Media Units