Quiz  /  Series Circuits Class 9 MCQ Questions With Answers

  • 1. 
    Solve for the current flowing through Resistor # 1

  • 35 amps
  • 25 amps
  • 35 milliamps
  • 25 milliamps

  • 2. 
    Each battery is a 10-V battery. What is the voltage difference between points B and D?

  • 10 V
  • 20 V
  • 30 V
  • 40 V

  • 3. 
    When a resistor in a series circuit is replaced by another resistor with an increased resistance value, the total circuit current will __________.

  • stay the same
  • decrease
  • increase
  • double in value

  • 4. 
    1 Ohm is the same as

  • 1 Coulomb / second
  • 1 Joule / Coulomb
  • 1 Joule / second
  • 1 Volt / Ampere

  • 5. 
    In which configuration is the current supplied by the battery the greatest?

  • A
  • B
  • C
  • A, B, and C are the same.

  • 6. 
    1 Watt is the same as

  • 1 Coulomb / second
  • 1 Joule / Coulomb
  • 1 Joule / second
  • 1 Volt / Ampere

  • 7. 
    This circuit has only one path for current to flow

  • series
  • parallel
  • combination
  • split

  • 8. 
    The formula E2/R

  • Voltage
  • Current
  • Power
  • Resistance

  • 9. 
    What is the total circuit resistance of two 25 ohm resistors and three 75 ohm resistors connected in series?

  • 100 ohms
  • 200 ohms
  • 275 ohm
  • 175 ohms

  • 10. 
    __________ remains the same in a series circuit.

  • Resistance
  • Voltage
  • Current
  • Power

  • 11. 
    The wattage being dissipated at R2 is _______________ W.

  • 27
  • 12
  • 15
  • 36

  • 12. 
    1 Ampere is the same as

  • 1 Coulomb / second
  • 1 Joule / Coulomb
  • 1 Joule / second
  • None of these

  • 13. 
    The wattage value for any resistor is equal to ____.

  • I X R
  • E/R
  • I X E
  • I/R

  • 14. 
    Using the circuit shown solve for total power dissipated in this circuit.

  • 20 watts
  • 30 watts
  • 1.8 Kilowatts
  • 180 watts

  • 15. 
    CIrcuit elements connected in parallel have the same

  • voltage drop across them.
  • current through them.
  • power dissipation by them.
  • None of the above.

  • 16. 
    100 Ω resistors are hooked in series. The equivalent resistance will be

  • less than 100 Ω.
  • 100 Ω.
  • more than 100 Ω.
  • More information is needed.

  • 17. 
    The wattage being dissipated at R3 is ______________________________ W.

  • 18
  • 54
  • 36

  • 18. 
    In which configuration is the voltage supplied by the battery the greatest?

  • A
  • B
  • C
  • A, B, and C are the same.

  • 19. 
    With three 10 resistors connected in series with a 30 volt power supply, the total circuit current will equal ____.

  • 300 amps
  • 1 amp
  • 150 amps
  • 1 millamp

  • 20. 
    Voltage drop stands for what?

  • the voltage applied to a circuit
  • the voltage flowing through a resistor
  • the voltage used by a load

  • 21. 
    The brightness of a lightbulb is most closely related to

  • its resistance.
  • the voltage drop across it.
  • the current through it.
  • the power dissipated by it.

  • 22. 
    In which configuration is the voltage drop across a single lightbulb the greatest?

  • A
  • B
  • C
  • A, B, and C are the same.

  • 23. 
    100 Ω resistors are hooked in parallel. The equivalent resistance will be

  • less than 100 Ω.
  • 100 Ω.
  • more than 100 Ω.
  • More information is needed.

  • 24. 
    What is the total circuit resistance of the following five resistors connected in series?R1 = 27 ohmsR2 = 33 ohmsR3 = 51 ohmsR4 = 1.2 kohmsR5 = 240 ohmsRt = __________ Ohms

  • 353.2
  • 1551
  • 1.9 K
  • All of above

  • 25. 
    The voltage drop across R1 is ______________________________ V.

  • 20
  • 30
  • 40
  • 50

  • 26. 
    Solve for the voltage drop at resistor 1

  • 38 volts
  • 60 Kvolts
  • 50 volts
  • 25 volts

  • 27. 
    Total series circuit wattage is equal to source voltage ____.

  • multiplied by the voltage value going through any resistor
  • multiplied by the current value going through any resistor
  • divided by the current value going through any resistor
  • divided by the voltage applied to the circuit and the total resistance of the circuit

  • 28. 
    1 Volt is the same as

  • 1 Coulomb / second
  • 1 Joule / Coulomb
  • 1 Joule / second
  • All of above

  • 29. 
    In which configuration is the current through a single lightbulb the greatest?

  • A
  • B
  • C
  • A, B, and C are the same.

  • 30. 
    CIrcuit elements connected in series have the same

  • voltage drop across them.
  • current through them.
  • power dissipation by them.
  • None of the above.
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