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EEE :: Series Circuits

  1. When a fourth resistor is connected in series with three resistors, the total resistance

  2. A.
    increases by one-fourth
    B.
    increases
    C.
    decreases
    D.
    remains the same

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  3. A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R3. The voltage across R3 is

  4. A.
    0 V
    B.
    1.2 V
    C.
    6 V
    D.
    0.6 V

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  5. A series circuit consists of three resistors with values of 120 , 270 , and 330 . The total resistance is

  6. A.
    less than 120
    B.
    the average of the values
    C.
    720
    D.
    120

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  7. A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200 . If each resistor is operating in the circuit at its maximum power dissipation, total current flow is

  8. A.
    27 mA
    B.
    2.7 mA
    C.
    19 mA
    D.
    190 mA

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  9. Which of the following series combinations dissipates the most power when connected across a 120 V source?

  10. A.
    one 220 resistor
    B.
    two 220 resistors
    C.
    three 220 resistors
    D.
    four 220 resistors

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  11. When one of three series resistors is removed from a circuit and the circuit is reconnected, the current

  12. A.
    increases
    B.
    increases by one-third
    C.
    decreases by one-third
    D.
    decreases by the amount of current through the removed resistor

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  13. The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates

  14. A.
    12 W
    B.
    48 W
    C.
    3 W
    D.
    8 W

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  15. The following resistors (one each) are connected in a series circuit: 470 , 680 , 1 k, and 1.2 k. The voltage source is 20 V. Current through the 680 resistor is approximately

  16. A.
    60 mA
    B.
    30 mA
    C.
    6 mA
    D.
    300 mA

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  17. A series circuit consists of a 4.7 k, a 12 k, and a 2.2 k resistor. The resistor that has the most voltage drop is

  18. A.
    the 12 k
    B.
    the 2.2 k
    C.
    the 4.7 k
    D.
    impossible to determine from the given information

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  19. All the voltage drops and the source voltage added together in a series circuit is equal to

  20. A.
    the total of the voltage drops
    B.
    the source voltage
    C.
    zero
    D.
    the total of the source voltage and the voltage drops

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