Electrical Quantities (Cambridge O Level Physics)

Exam Questions

2 hours39 questions
1
Sme Calculator
1 mark

What is the unit of electromotive force?

  • Joule

  • Volt

  • Ampere

  • Watt

Did this page help you?

2
Sme Calculator
1 mark

The diagram shows two light, silver-coated balls labelled X and Y hanging from threads near to each other.

4-2-2-e-charged-balls

Which line identifies the possible charges on X and Y?

  X Y
A neutral neutral
B negative negative
C negative positive
D positive negative

    Did this page help you?

    3
    Sme Calculator
    1 mark

    Identify the correct unit of charge.

    • Ampere

    • Coulomb

    • Newton

    • Volt

    Did this page help you?

    4
    Sme Calculator
    1 mark

    Which pair of quantities have the same units?

    • Current and potential difference

    • Current and resistance

    • Electromotive force and potential difference

    • Electromotive force and resistance

    Did this page help you?

    1
    Sme Calculator
    1 mark

    A PVC (plastic) rod is rubbed with a nylon cloth. This process causes electrons to be transferred between the rod and the cloth, causing both objects to become charged.

    Which of the rows in the table below correctly gives the nature of the charges on both the cloth and the rod, and the effect the objects have on each other after becoming charged?

     

    Charges on rod and cloth

    Effect

    A

    the same

    repel

    B

    the same

    attract

    C

    opposite

    repel

    D

    opposite

    attract

      Did this page help you?

      2
      Sme Calculator
      1 mark

      A student wants to charge up some rods by rubbing them with a cloth made from a suitable material.

      He has a number of rods to choose from: a copper rod, a PVC rod, an aluminium rod and a glass rod.

      Which two of the rods would hold a charge when rubbed with an appropriate cloth?

      • Aluminium and PVC

      • Glass and copper

      • Aluminium and copper

      • Glass and PVC

      Did this page help you?

      3
      Sme Calculator
      1 mark

      A student muses on the concept of the resistance of a wire.

      She wonders whether changing the diameter of the wire and the length of the wire would affect the resistance.

      Since you have studied this in physics, you know the answer!

      Choose the row from the table in which changes are made to both the diameter and the length that would each decrease the resistance of a wire.

       

      Change to length

      Change to diameter

      A

      increase

      increase

      B

      increase

      decrease

      C

      decrease

      increase

      D

      decrease

      decrease

        Did this page help you?

        4
        Sme Calculator
        1 mark

        A student rubs a polythene rod with a cloth, giving it a negative charge. She then holds it near an earthed, conducting sphere as shown in the diagrams below.

        Which of the diagrams shows the correct distribution of charges on the conducting sphere?

        q3-medium-mcq-4-2-electrical-quantitiescie-igcse-physics

          Did this page help you?

          5
          Sme Calculator
          1 mark

          A student has four copper wires, of different dimensions.

          Which of her wires has the largest resistance?

           

          Length of wire / cm

          Diameter of wire / mm

          A

          100

          0.2

          B

          300

          0.1

          C

          50

          0.4

          D

          30

          0.5

            Did this page help you?

            6
            Sme Calculator
            1 mark

            The diagram shows an uncharged ball covered with metallic paint. The ball is suspended from an insulating thread. It is placed near a positively charged rod.

            q23-cie-ol-physics-specimen-paper-1-mcq

            Which diagram shows the charge distribution on the ball?

            q23-2-cie-ol-physics-specimen-paper-1-mcq

              Did this page help you?

              7
              Sme Calculator
              1 mark

              A charge of 45 C flows through an electric appliance in 3.0 minutes.

              What is the average current in the appliance?

              • 0.25 A

              • 4.0 A

              • 15 A

              • 135 A

              Did this page help you?

              8
              Sme Calculator
              1 mark

              A wire of length 0.50m and cross-sectional area 1.0 × 10–6m2 has a resistance of 0.75 Ω.
              Another wire of the same material has a length of 2.0 m and a cross-sectional area of 0.50 × 10–6m2.
              What is the resistance of the longer wire?

              • 0.094 Ω

              • 0.38 Ω

              • 1.5 Ω

              • 6.0 Ω

              Did this page help you?

              9
              Sme Calculator
              1 mark

              Which diagram shows the pattern and direction of the electric field lines near a positive charge? 

              q27-cie-ol-physics-paper-1-2021-mcq

                Did this page help you?

                10
                Sme Calculator
                1 mark

                A positively charged rod is held close to an insulated metal sphere. The sphere is earthed as shown. 

                q28-1-cie-ol-physics-paper-1-2021-mcq

                The earth connection is removed and then the rod is removed. 

                Which diagram shows the charges on the sphere after the rod is removed? 

                q28-2-cie-ol-physics-paper-1-2021-mcq

                  Did this page help you?

                  11
                  Sme Calculator
                  1 mark

                  The diagram shows an electrostatic precipitator. It can be used to remove dust from air.

                  q29-cie-ol-physics-paper-1-2021-mcq

                  What happens at the negative grid?

                  • Dust particles gain electrons.

                  • Dust particles gain protons. 

                  • Dust particles lose electrons.

                  • Dust particles lose protons. 

                  Did this page help you?

                  1
                  Sme Calculator
                  1 mark

                  What is the definition of an electric field?

                  • A region in space in which a mass experiences a force due to the Earth’s mass.

                  • A region in space through which electromagnetic radiation is passing.

                  • A region in space in which a compass needle experiences a force.

                  • A region in space in which an electric charge experiences a force.

                  Did this page help you?

                  2
                  Sme Calculator
                  1 mark

                  Four current-voltage graphs are given below.

                  q2-hard-mcq-4-2-electrical-quantitiescie-igcse-physics

                  One of them is for an ohmic resistor, and another is for a filament lamp.

                  Which is which?

                   

                  Filament lamp

                  Ohmic resistor

                  A

                  Q

                  S

                  B

                  R

                  Q

                  C

                  P

                  Q

                  D

                  Q

                  R

                    Did this page help you?

                    3
                    Sme Calculator
                    1 mark

                    Which of the diagrams below shows the correct electric field pattern for oppositely charged parallel plates?

                    q3-hard-mcq-4-2-electrical-quantitiescie-igcse-physics

                      Did this page help you?

                      4
                      Sme Calculator
                      1 mark

                      Which row in the table gives the correct units for charge and for EMF?

                       

                      Charge

                      EMF

                      A

                      Q

                      E

                      B

                      C

                      V

                      C

                      A

                      J

                      D

                      J

                        Did this page help you?

                        5
                        Sme Calculator
                        1 mark

                        A student sets up a circuit as shown in the diagram

                        q5-hard-mcq-4-2-electrical-quantitiescie-igcse-physics

                        A charge of 4.9 C flows through the lamp in 0.7 s.

                        What is the current through the resistor, which direction do electrons flow through the resistor, and what is the direction of the conventional current through the resistor?

                         

                        Current / A

                        Direction of electron flow

                        Direction of conventional current

                        A

                        7.00

                        Left to right

                        Right to left

                        B

                        3.43

                        Left to right

                        Right to left

                        C

                        7.00

                        Right to left

                        Right to left

                        D

                        3.43

                        Right to left

                        Right to left

                          Did this page help you?

                          6
                          Sme Calculator
                          1 mark

                          q8-hard-mcq-4-2-electrical-quantitiescie-igcse-physics

                          Which row in the table shows possible values for the two meters shown in the circuit diagram?

                           

                          X

                          Y

                          A

                          4.0

                          8.0

                          B

                          2.0

                          2.0

                          C

                          4.0

                          2.0

                          D

                          1.0

                          1.0

                            Did this page help you?