Quiz Over Uses Of Resistance

29 Questions | Total Attempts: 63

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Quiz Over Uses Of Resistance

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Questions and Answers
  • 1. 
    In which unit is the potential difference measured?
    • A. 

      Ampere

    • B. 

      Ohm

    • C. 

      Volt

    • D. 

      Watt

  • 2. 
    Which circuit contains a fuse?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 3. 
    Which of these is a variable resistor ?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 4. 
    Which circuit should be used to determine the resistance of the resistor R? 
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 5. 
    Which copper wire would have the smallest resistance?
    • A. 

      A long, thick wire

    • B. 

      A long, thin wire

    • C. 

      A short, thick wire

    • D. 

      A short, thin wire

  • 6. 
    Which of these is a buzzer or bell?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 7. 
    The reading on the ammeter in the circuit is 1.0 A.A second ammeter is connected in the circuit. It also reads 1.0 A.At which labelled point is it connected?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 8. 
    The diagram shows a circuit containing a battery, a lamp, a switch and another component X. The switch is initially closed and the lamp is lit. The switch is now opened and the lamp remains lit for several seconds before slowly going out. What is the component X? 
    • A. 

      A capacitor

    • B. 

      A light-dependent resistor

    • C. 

      A thermistor

    • D. 

      A variable resistor

  • 9. 
    Which of these is a fixed resistor ?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 10. 
    Which labelled component in the circuit shown controls the brightness of the lamp X?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 11. 
    The diagram shows a circuit containing two ammeters and three resistors.Which of the ammeters will show the current in the resistor 2?
    • A. 

      Ammeter X only

    • B. 

      Ammeter Y only

    • C. 

      Both ammeter X and ammeter Y

    • D. 

      Neither ammeter X nor ammeter Y

  • 12. 
    Which component can store energy and can be used in time-delay circuits?
    • A. 

      A capacitor

    • B. 

      A potentiometer

    • C. 

      A resistor

    • D. 

      A thermistor

  • 13. 
    A circuit contains 2 resistors connected in parallel to a battery.Which of the following statements about the currents at P, Q and R is true?
    • A. 

      The current at P is the greatest.

    • B. 

      The current at Q is the greatest.

    • C. 

      The current at R is the greatest.

    • D. 

      The current is the same at points P, Q and R.

  • 14. 
    The diagrams shows a torch containing two cells, a switch and a lamp.
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 15. 
    A student carries out an experiment to investigate the resistance of a resistor R. She takes a series of readings of potential difference (p.d.) and current, and plots a graph of her results.Which circuit should she use?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 16. 
    A student makes four circuits.In which circuit are both lamps protected by the fuse?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 17. 
    The electric circuit shown in Fig. 9.1 contains a battery, two resistors, a switch and another component.
  • 18. 
    The electric circuit shown in Fig. 9.1 contains a battery, two resistors, a switch and another component.
    • A. 

      Charge

    • B. 

      Current

    • C. 

      Potential difference

    • D. 

      Power

  • 19. 
    What flows in a circuit in order to create a current? Tick one box.
    • A. 

      Charge

    • B. 

      Potential difference

    • C. 

      Power

    • D. 

      Resistance

  • 20. 
    Using the values from Fig. 9.1, calculate the combined resistance of the two resistors.
  • 21. 
    Using the values from Fig. 9.1, calculate the current in the circuit, stating the unit in your answer.
  • 22. 
    When the switch is open, what is the potential difference across the 16 ohm resistor?
    • A. 

      12 V

    • B. 

      8.0 V

    • C. 

      6.0 V

    • D. 

      0 V

  • 23. 
    State the relationship between the currents I1, I2 and I3.
    • A. 

      I1 = I2 + I3

    • B. 

      I2 = I3 + I1

    • C. 

      I3 = I1 + I2

    • D. 

      I = I1 + I2 + I3

  • 24. 
    State the relationship between the currents I1 and I4.
    • A. 

      I1 = I4

    • B. 

      I1 > I4

    • C. 

      I1 < I4

    • D. 

      I1 = I2 + I3 + I4

  • 25. 
    The ammeter reads 0.80 A. Assume it has zero resistance.Calculate the potential difference between X and Y.
  • 26. 
    The ammeter reads 0.80 A. Assume it has zero resistance.Calculate the current I3.
  • 27. 
    The IGCSE class is investigating the resistance of a resistor.What is the reading of the Voltage?
  • 28. 
    The IGCSE class is investigating the resistance of a resistor.What is the reading of the Current?
  • 29. 
    The IGCSE class is investigating the resistance of a resistor.Calculate the resistance R of the resistor using the equation R = V/I.