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Electrical Engineering
Series Parallel Circuits
Quiz 1
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Q.1
The parallel combination of a 470 Ω resistor and a 1.2 kΩ resistor is in series with the parallel combination of three 3 kΩ resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of
470 Ω or 1.2 kΩ
3 kΩ
470 Ω
1.2 kΩ
Q.2
A Wheatstone bridge consists of four resistors in parallel.
True
False
Q.3
A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately
14 mA
1.4 mA
5 mA
50 mA
Q.4
A Wheatstone bridge is often shown in a "diamond" configuration.
True
False
Q.5
A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is
24 Ω
2.4 Ω
300 Ω
3,000 Ω
Q.6
Using Kirchhoff's voltage law, you can find the voltages across certain parts of a series-parallel circuit.
True
False
Q.7
In a certain five-step R/2R ladder network, the smallest resistor value is 1 kΩ. The largest value is
Indeterminable
2 kΩ
10 kΩ
20 kΩ
Q.8
A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is
680 Ω
1,029 Ω
200 Ω
880 Ω
Q.9
A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is
12 V
24 V
0 V
6 V
Q.10
A smaller-value load resistor will cause the output voltage to change more than a larger-value one.
True
False
Q.11
A galvanometer is a meter that measures small amounts of voltage.
True
False
Q.12
Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is
900 μA
9 mA
90 mA
800 μA
Q.13
The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)
6.8 kΩ
2.2 kΩ
6.8 kΩ and 10 kΩ
2.2 kΩ and 1 kΩ
Q.14
Two equal-value resistors in series will divide the source voltage equally.
True
False
Q.15
Using the current-divider formula, you can find the current in any branch of a series-parallel circuit.
True
False
Q.16
A resistor ladder network is a special type of series-parallel circuit.
True
False
Q.17
The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 KΩ resistor is
25 %
20 %
100 %
50 %
Q.18
The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is
1,650 Ω
1,078 Ω
77.8 Ω
778 Ω
Q.19
To derive 18 V and 12 V from a 24 V supply requires a voltage divider with three taps.
True
False
Q.20
The higher the range setting, the less the internal resistance and the greater the load effect of the voltmeter on a circuit.
True
False
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