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.Management Sciences
Category: Series-parallel Circuits
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___________?
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A. 1,650 Ω
B. 1,078 Ω
C. 77.8 Ω
D. 778 Ω
The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is_____________?
A. 20,000 Ω
B. 100,000 Ω
C. 200,000 Ω
D. 1,000,000 Ω
The first goal to accomplish in analyzing a complex series-parallel circuit is to____________?
A. solve for all the voltage drops
B. solve for the total current and resistance
C. equate all series components
D. equate all parallel components
A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?
A. 24 Ω
B. 2.4 Ω
C. 300 Ω
D. 3,000 Ω
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____________?
A. 680 Ω
B. 1,029 Ω
C. 200 Ω
D. 880 Ω
If R1 is in series with parallel connected to R2 and R3, what happens to total current if R2 opens?
A. cannot tell
B. remains the same
C. increases
D. decreases
On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?
A. 1 V
B. 50 V
C. 500 V
D. 1,000 V
In a certain five-step R/2R ladder network, the smallest resistor value is 1 kΩ. The largest value is___________?
A. Indeterminable
B. 2 kΩ
C. 10 kΩ
D. 20 kΩ
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