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Series-Parallel Circuits
Multiple Choice

Choose the best response to complete the sentence or answer the question. You will need symbol font on your computer to see Greek symbols such as mu.gif and omega.gif.

1 .       Two 1.2 komega.gif resistors are in series and this series combination is in parallel with a 3.3 komega.gif resistor. The total resistance is [Hint]

 
 
 
 


2 .       Two 3.3 komega.gif resistors are in series and this series combination is in parallel with a 4.7 komega.gif resistor. The voltage across one of the 3.3 komega.gif resistors is 12 V. The voltage across the 4.7 komega.gif resistor is [Hint]

 
 
 
 


3 .       The parallel combination of a 470 omega.gif resistor and a 680 omega.gif resistor is in series with the parallel combination of four 2 komega.gif resistors. The total resistance is [Hint]

 
 
 
 


4 .       The parallel combination of a 470 omega.gif resistor and a 1.2 komega.gif resistor is in series with the parallel combination of three 3 komega.gif resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of [Hint]

 
 
 
 


5 .       The parallel combination of a 6.8 komega.gif resistor and a 10 komega.gif resistor is in series with the parallel combination of a 2.2 komega.gif resistor and a 1 komega.gif resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are) [Hint]

 
 
 
 


6 .       The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage [Hint]

 
 
 
 


7 .       A certain voltage divider consists of two 12 komega.gif resistors in series. Which of the following load resistors will have the most effect on the output voltage? [Hint]

 
 
 
 


8 .       A certain voltage divider consists of three 1 komega.gif resistors in series. Which of the following load resistors will have the least effect on the output voltage? [Hint]

 
 
 
 


9 .       When a load resistance is removed from the output of a voltage divider circuit, the current drawn from the source [Hint]

 
 
 
 


10 .       In a certain five-step R/2R ladder network, the smallest resistor value is 1 komega.gif. The largest value is [Hint]

 
 
 
 


11 .       A certain circuit is composed of two parallel resistors. The total resistance is 1,403 omega.gif. One of the resistors is 2 komega.gif. The other resistor value is [Hint]

 
 
 
 


12 .       A voltage divider consists of two 68 komega.gif resistors and a 24 V source. The unknown output voltage is [Hint]

 
 
 
 


13 .       A voltage divider consists of two 100 komega.gif resistors and a 12 V source. What will the output voltage be if a load resistor of 1 Momega.gif is connected to the output? [Hint]

 
 
 
 


14 .       A 6 V battery output is divided down to obtain two output voltages. Three 2.2 komega.gif resistors are used to provide the two taps. The two output voltages are [Hint]

 
 
 
 


15 .       Referring to Problem 14, if a 10 komega.gif load is connected to the higher of the two outputs, the loaded voltage value will be [Hint]

 
 
 
 


16 .       On which of the following voltage range settings will a voltmeter present the minimum load on a circuit? [Hint]

 
 
 
 


17 .       The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is [Hint]

 
 
 
 


18 .       The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is [Hint]

 
 
 
 


19 .       A balanced Wheatstone bridge consists of an RV of 3,500 omega.gif, an R2 of 200 omega.gif, and an R3 of 680 omega.gif. The value of RUNK is [Hint]

 
 
 
 


20 .       Three 10 komega.gif resistors are connected in series. A 20 komega.gif resistor is connected in parallel across one of the 10 komega.gif resistors. The voltage source is 24 V. The total current in the circuit is [Hint]

 
 
 
 


21 .       A 12 komega.gif resistor, a 15 komega.gif resistor, and a 22 komega.gif resistor are in series with two 10 komega.gif resistors that are in parallel. The source voltage is 75 V. Current through the 15 komega.gif resistor is approximately [Hint]

 
 
 
 


22 .       Referring to Problem 21, the current through one of the 10 komega.gif resistors is [Hint]

 
 
 
 


23 .       A certain Wheatstone bridge has the following resistor values: RV = 10 komega.gif, R2 = 720 omega.gif, and R4 = 2.4 komega.gif. The unknown resistance is [Hint]

 
 
 
 


24 .       The parallel combination of a 470 omega.gif resistor and a 1.5 komega.gif resistor is in series with the parallel combination of five 1 komega.gif resistors. The source voltage is 50 V. The percentage of the load current through any single 1 komega.gif resistor is [Hint]

 
 
 
 


25 .       Referring to Problem 24, the voltage across the 1.5 komega.gif resistor is approximately [Hint]

 
 
 
 






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