|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!
| 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?
| Q2: Using the setup described in Q1, what is the closest 10% common resistor value needed in the circuit?|
| 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?|
| 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?
| 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
| 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
| 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
| 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
| 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
| Q10: What is the total resistance between point A and B in the circuit shown below?|