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EEE :: Series - Parallel Circuits

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

  2. A.
    20,000
    B.
    100,000
    C.
    200,000
    D.
    1,000,000

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  3. Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is

  4. A.
    138
    B.
    1,389
    C.
    5,700
    D.
    880

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  5. The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage

  6. A.
    decreases
    B.
    increases
    C.
    remains the same
    D.
    becomes zero

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

  8. A.
    1 M
    B.
    24 k
    C.
    18 k
    D.
    12 k

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  9. A voltage divider consists of two 68 k resistors and a 24 V source. The unknown output voltage is

  10. A.
    12 V
    B.
    24 V
    C.
    0 V
    D.
    6 V

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  11. Three 10 k resistors are connected in series. A 20 k resistor is connected in parallel across one of the 10 k resistors. The voltage source is 24 V. The total current in the circuit is

  12. A.
    900 A
    B.
    9 mA
    C.
    90 mA
    D.
    800 A

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  13. A certain voltage divider consists of three 1 k resistors in series. Which of the following load resistors will have the least effect on the output voltage?

  14. A.
    1 M
    B.
    100 k
    C.
    1 k
    D.
    330

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  15. The parallel combination of a 470 resistor and a 1.5 k resistor is in series with the parallel combination of five 1 k resistors. The source voltage is 50 V. The percentage of the load current through any single 1 k resistor is

  16. A.
    25%
    B.
    20%
    C.
    100%
    D.
    50%

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  17. A certain Wheatstone bridge has the following resistor values: R1 = 10 k, R2 = 720 , and R4 = 2.4 k. The unknown resistance is

  18. A.
    24
    B.
    2.4
    C.
    300
    D.
    3,000

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  19. On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?

  20. A.
    1 V
    B.
    50 V
    C.
    500 V
    D.
    1,000 V

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