Quiz V9.0 Resistor Networks. Beginner Level. Credits to: Derstrom Attempt All 10 Questions.....Unanswered questions will be considered Incorrect Use the 'Score' button to show your Score.! You can re-attempt any incorrectly answered Questions and re-check your Score! | |

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Q1: You want to run a 2.2 volt LED from a 12 volt supply. If the LED uses a MAXIMUM of 20 milliamps of current, what value of series resistance is required so as not to burn out the LED? 120 ohms 240 ohms 370 ohms 490 ohms | |

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Q2: Using the setup described in Q1, what is the closest 10% common resistor value needed in the circuit? 470 ohms 520 ohms 560 ohms 680 ohms | |

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Q3: If a 60 hertz square wave is fed into a circuit that flashes an LED once every cycle, how many times does the LED flash in 2.8 seconds? 140 times 154 times 168 times 180 times | |

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Q4: There are two resistors in series, connected to an 8 volt power source. One has a color code of brown-black-brown-gold, and the other is missing the bands. If the circuit draws 25mA, what is the resistance of the unknown resistor? 220 ohms 270 ohms 330 ohms 390 ohms | |

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Q5: When you have four identical capacitors wired in parallel The total capacitance is 4 times the value of a single capacitor The total capacitance is 1/4 of the value of a single capacitor The total capacitance is the capacitance to the fourth power of an individual cap The total capacitance is the fourth root of the capacitance of a single cap | |

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Q6: What is an inductor? A device like a resistor that limits voltage to a desired level A device that is a type of transformer A device that impedes the flow of alternating current A device that impedes the flow of direct current | |

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Q7: Kirchoff's voltage law states that: The sum of all currents at a given node in a circuit must equal zero The sum of all voltages at a given node in a circuit must equal 0 The sum of all the currents at a given node in a circuit must equal 0 The sum of all voltages at a given node in a circuit must equal 1 | |

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Q8: If a 4.7k resistor is connected to a 12 volt supply, what is the power dissipated by the resistor? About 3 milliwatts About 30 milliwatts About 300 milliwatts About 3000 milliwatts | |

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Q9: What is the RMS voltage of a source that produces a sine wave with a peak-to-peak voltage of 12 volts? About 2.12 volts About 2.83 volts About 4.24 volts About 8.48 volts | |

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Q10: What is the total resistance between point A and B in the circuit shown below? 154.25 ohms 394.01 ohms 494.01 ohms 1254.34 ohms | |

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