1.
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An unknown circuit element is connected to an AC voltage source as shown. What is the element in the circuit, a resistor, an inductor, or a capacitor? Start. Interactive Hint More Help.
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| A resistor. |
| An inductor. |
| A capacitor. |
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2.
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An unknown circuit element is connected to an AC voltage source as shown. What is the element in the circuit, a resistor, an inductor, or a capacitor? Start. Interactive Hint More Help.
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| A resistor. |
| An inductor. |
| A capacitor. |
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3.
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An unknown circuit element is connected to an AC voltage source as shown. What is the element in the circuit, a resistor, an inductor, or a capacitor? Start. Interactive Hint More Help.
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| A resistor. |
| An inductor. |
| A capacitor. |
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4.
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An unknown resistor is connected to an AC voltage source as shown. Use the two graphs to determine the resistance of the resistor. You may click in the graph window to read values for voltage and current. Start
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| 4 Ohm. |
| 0.4 Ohm. |
| 0.25 Ohm. |
| 8 Ohm. |
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5.
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A resistor is connected to a variable ac supply voltage as shown above. Use the slider to vary the effective voltage. The voltage is on the graph given in volts and the current in amperes. Determine the average power, which is delivered to the resistor, when the effective voltage is 17 V. Start.
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| 144.5 W. |
| 44 W. |
| 280 W. |
| 112 W. |
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6.
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A coil is connected to a sine generator as shown above. Use the slider to control the frequency of the sine generator. The graphs shows the voltage (black) across the coil measured in volt and the current (red) through the coil measured in ampere. Determine the inductance L. Start.
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| 0.6mH. |
| 0.8 mH. |
| 4.8 mH. |
| 0.4 mH. |
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7.
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A capacitor is connected to a sine generator as shown above. Use the slider to control the frequency of the sine generator. The graphs shows the voltage (black) across the capacitor measured in volts and the current (red) through the capacitor measured in amperes. Determine the capacitance C. Start.
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| 35mF. |
| 46mF. |
| 120mF. |
| 70mF. |
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8.
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An RC circuit uses a capacitor and resistor connected to an AC source as shown above. The voltages across the resistor and capacitor do not seem to equal the source voltage, 10 V, at 300 Hz. That is, Vr + Vc =Vs does not seem to be true in this circuit. Does this violate Kirchhoff's loop rule for voltage? Start. Interactive Hint More Help.
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| Kirchhoff's loop rules applies only to DC voltage sources. |
| RMS values must be used when applying Kirchhoff's rules. |
| Kirchhoff's rules only apply to resistors. |
| Kirchhoff's rules apply to instantaneous values. |
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9.
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A LRC is shown above. You can measure circuit values by placing a mouse on a component. Which circuit values are correct?
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| Circuit values. |
| Circuit values. |
| Circuit values. |
| Circuit values. |
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10.
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Determine the rms power being dissipated in the the LRC circuit at 200 Hz. Start. Interactive Hint More Help.
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| 1.8 W. |
| 2.6 W. |
| 3.7 W. |
| 5.2 W. |
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11.
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Find the resonant frequency of the LRC circuit. Start.
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| 400 Hz. |
| 425 Hz. |
| 450 Hz |
| 475 Hz. |
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12.
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Find the resonant frequency of the LRC circuit. Start.
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| 600 Hz. |
| 1400 Hz. |
| 1000 Hz |
| 1200 Hz. |
