IGCSEPhysicsCambridge (CIE)Exam Questions4. Electricity & MagnetismElectrical Quantities

Electrical Quantities (Cambridge (CIE) IGCSE Physics): Exam Questions

Exam code: 0625 & 0972

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1
1 mark

What is the unit of electromotive force?

  • Joule

  • Volt

  • Ampere

  • Watt

Choose your answer

2
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

    Choose your answer

    3
    1 mark

    Extended tier only

    What is the correct unit of charge?

    • Ampere

    • Coulomb

    • Newton

    • Volt

    Choose your answer

    4
    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

    Choose your answer

    5
    1 mark

    Which line correctly states the equation for electrical energy?

    • E space equals space I R

    • E space equals space m v squared

    • E space equals space rho g h

    • E space equals space V I t

    Choose your answer

    6
    1 mark

    A large battery is labelled with various items of information about the battery.

    12 V

    30 kg

    216 kJ

    680 A

    One of these items of information is the electromotive force (e.m.f.) of the battery.

     What is the e.m.f. of the battery?

    • 12 V

    • 30 kg

    • 216 kJ

    • 680 A

    Choose your answer

    7
    1 mark

    Extended Tier Only

    Which unit is equivalent to a volt (V)?

    • A/Ω

    • J/C

    • J/s

    • W/C

    Choose your answer

    8
    1 mark

    Which particles move to cause a current in a copper wire?

    • copper atoms

    • electrons from the copper atoms

    • protons from the copper nuclei

    • neutrons from the copper nuclei

    Choose your answer

    9
    1 mark

    A wire has a uniform circular cross-sectional area.

    Which statement is correct?

    • The resistance of the wire is directly proportional to its cross-sectional area and inversely proportional to its diameter.

    • The resistance of the wire is directly proportional to its cross-sectional area and inversely proportional to its length.

    • The resistance of the wire is directly proportional to its length and inversely proportional to its cross-sectional area.

    • The resistance of the wire is directly proportional to its length and inversely proportional to its diameter.

    Choose your answer

    10
    1 mark

    The diagrams show the voltage–time graphs for two electrical power supplies, X and Y.

    Graph X shows a horizontal straight line at a constant positive voltage. Graph Y shows a sine wave where the voltage oscillates between positive and negative values over time.

    Which row correctly identifies the type of current provided by each supply?

    supply X

    supply Y

    A

    alternating current (a.c.)

    direct current (d.c.)

    B

    alternating current (a.c.)

    alternating current (a.c.)

    C

    direct current (d.c.)

    direct current (d.c.)

    D

    direct current (d.c.)

    alternating current (a.c.)

      Choose your answer

      11
      1 mark

      The electromotive force (e.m.f.) of a battery is

      • the charge that flows through the battery per unit time

      • the energy transferred per unit charge in driving charge around a complete circuit

      • the force that pushes electrons through the circuit

      • the potential difference across the terminals of the battery when no current flows

      Choose your answer

      1
      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 row gives the correct 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

        Choose your answer

        2
        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

        Choose your answer

        3
        1 mark

        Extended tier only

        A student considers how changing the diameter and length of a wire affects its resistance.

        Which row shows the changes that could be made to the length and diameter of the wire to decrease its resistance?

         

        Change to length

        Change to diameter

        A

        increase

        increase

        B

        increase

        decrease

        C

        decrease

        increase

        D

        decrease

        decrease

          Choose your answer

          4
          1 mark

          A student rubs an acetate 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 diagram shows the correct distribution of charges on the conducting sphere?

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

            Choose your answer

            5
            1 mark

            Extended tier only

            A student has four copper wires, of different dimensions.

            Which of the following 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

              Choose your answer

              6
              1 mark

              A plastic rod is rubbed with a cloth. The rod becomes positively charged. 

              What happens to the plastic rod and what is the charge on the cloth? 

              plastic rod

              charge on cloth

              A

              gains electrons

              negative

              B

              gains electrons

              positive

              C

              loses electrons

              negative

              D

              loses electrons

              positive

                Choose your answer

                7
                1 mark

                The electromotive force (e.m.f.) of a mobile phone battery is 3.7 V. 

                What does this mean?

                • 3.7 J is the maximum energy the battery can provide in 1.0 s.

                • 3.7 J is the total energy the battery can provide before it has to be recharged.

                • 3.7 J of energy is provided by the battery to drive a charge of 1.0 C around a complete circuit.

                • 3.7 J of energy is provided by the battery to drive a current of 1.0 A around a complete circuit.

                Choose your answer

                8
                1 mark

                A water heater is connected to a 230 V supply and there is a current of 26 A in the heater.

                It takes 20 minutes to heat the water to the required temperature. 

                How much energy is supplied by the heater?

                • 6.0 cross times 103 J

                • 1.0 cross times 104 J

                • 1.2 cross times 105 J

                • 7.2 cross times 106 J

                Choose your answer

                9
                1 mark

                The diagram shows a charged plastic rod and an uncharged metal sphere. The metal sphere is suspended by an insulating thread. 

                Diagram showing a positively charged plastic rod next to a metal sphere suspended by an insulating thread, illustrating static electricity interaction.

                The plastic rod is then moved close to the metal sphere. 

                Which row is correct? 

                 

                observation

                the overall state of the metal sphere

                A

                The rod attracts the sphere.

                charged

                B

                The rod attracts the sphere.

                uncharged

                C

                The rod repels the sphere.

                charged

                D

                The rod repels the sphere.

                uncharged

                  Choose your answer

                  10
                  1 mark

                  The circuit shown is being used to measure the resistance of resistor Z.  

                  Electrical circuit diagram with components labelled X, Y, and Z. Includes a variable resistor and symbols for connection points and lines.

                  What is the correct combination of meters to determine the resistance of resistor Z? 

                   

                  meter X

                  meter Y

                  A

                  ammeter

                  ammeter

                  B

                  ammeter

                  voltmeter

                  C

                  voltmeter

                  ammeter

                  D

                  voltmeter

                  voltmeter

                    Choose your answer

                    11
                    1 mark

                    A plastic rod is brought near to a small plastic sphere suspended from a stand. The sphere is repelled by the rod. 

                    Why is this?

                    • The rod and the sphere have like charges.

                    • The rod and the sphere have unlike charges.

                    • The rod is charged and the sphere is uncharged.

                    • The rod is uncharged and the sphere is charged.

                    Choose your answer

                    12
                    1 mark

                    A resistor converts 360 J of energy when there is a current of 3.0 A in it. The potential difference across the resistor is 6.0 V. 

                    For how long is there this current in the resistor?

                    • 0.05 s

                    • 20 s

                    • 180 s

                    • 720 s

                    Choose your answer

                    13
                    1 mark

                    A plastic rod is rubbed with a cloth.

                    Fig 1

                    The rod and the cloth both become charged as electrons move between them.

                    The rod becomes negatively charged.

                    Which diagram shows how the rod becomes negatively charged and shows the final charge on the cloth?

                    Figure

                      Choose your answer

                      14
                      1 mark

                      Four students draw a circuit diagram of the apparatus used to measure the resistance of resistor R.

                       Which circuit is correct?

                      Circuits

                        Choose your answer

                        15
                        1 mark

                        The diagram shows the current–voltage graph for a metal wire.

                        graph

                        What can be deduced from the graph?

                        • As voltage increases, the temperature of the wire increases.

                        • As voltage increases, the temperature of the wire decreases.

                        • As voltage increases, the resistance of the wire increases.

                        • As voltage increases, the resistance of the wire remains constant.

                        Choose your answer

                        16
                        1 mark

                        A battery is connected to a circuit. It is switched on for 1.0 minute. During that time, there is a current of 0.40 A in the circuit and the battery supplies a total of 48 J of energy.

                        Which row gives the charge that passes and the electromotive force (e.m.f.) of the battery?

                        charge that passes in 1.0 minute / C

                        e.m.f. of the battery / V

                        A

                        0.40

                        2.0

                        B

                        0.40

                                  120

                        C

                           24

                        2.0

                        D

                           24

                                  120

                          Choose your answer

                          17
                          1 mark

                          A student rubs a plastic rod with a cloth. The rod becomes negatively charged.

                          Which statement about the rod is correct?

                          • It gains electrons from the cloth and is attracted by a positively charged object.

                          • It gains electrons from the cloth and is repelled by a positively charged object.

                          • It loses electrons to the cloth and is attracted by a negatively charged object.

                          • It loses electrons to the cloth and is repelled by a negatively charged object.

                          Choose your answer

                          18
                          1 mark

                          A plastic rod is rubbed with a cloth. The rod becomes negatively charged.

                          What has happened during the charging process?

                          • Protons have been transferred from the rod to the cloth.

                          • Electrons have been transferred from the rod to the cloth.

                          • Protons have been transferred from the cloth to the rod.

                          • Electrons have been transferred from the cloth to the rod.

                          Choose your answer

                          19
                          Sme Calculator
                          1 mark

                          A current of 0.50 A flows through a lamp for 4.0 minutes.

                          What is the charge that flows through the lamp?

                          • 2.0 C

                          • 8.0 C

                          • 60 C

                          • 120 C

                          Choose your answer

                          1
                          1 mark

                          Extended tier only

                          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.

                          Choose your answer

                          2
                          1 mark

                          Extended tier only

                          Four current-voltage graphs are given below.

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

                          Which graph shows an ohmic resistor and which shows a filament lamp?

                           

                          Filament lamp

                          Ohmic resistor

                          A

                          Q

                          S

                          B

                          R

                          Q

                          C

                          P

                          Q

                          D

                          Q

                          R

                            Choose your answer

                            3
                            1 mark

                            Extended tier only

                            Which diagram shows the correct electric field pattern between two oppositely charged parallel plates?

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

                              Choose your answer

                              4
                              1 mark

                              Extended tier only

                              Which row in the table gives the correct units for charge and e.m.f.?

                               

                              Charge

                              EMF

                              A

                              Q

                              E

                              B

                              C

                              V

                              C

                              A

                              J

                              D

                              J

                              ᘯ

                                Choose your answer

                                5
                                1 mark

                                Extended tier only

                                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 resistor in 0.7 s.

                                Which row shows the correct current, direction of electron flow and direction of 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

                                  Choose your answer

                                  6
                                  1 mark

                                  A student connects a 6 V power supply to a 3 Ω resistor. The resistor is left connected to the power supply for 1 minute.

                                  How much power is dissipated by the resistor?

                                  • 2 W

                                  • 12 W

                                  • 720 J

                                  • 18 W

                                  Choose your answer

                                  7
                                  1 mark

                                  A 3.0 Ω resistor is connected to a 15 V power supply as shown in the diagram. The ammeter reads 5 A throughout the experiment.

                                  q7-hard-mcq-4-2-electrical-quantitiescie-igcse-physics

                                  How much energy is dissipated as heat by the resistor in 2 minutes?

                                  • 9.0 kJ

                                  • 150 J

                                  • 600 J

                                  • 5.0 kJ

                                  Choose your answer

                                  8
                                  1 mark

                                  A 2.0 Ω resistor is connected to meter X and meter Y as shown in the diagram.

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

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

                                   

                                  X

                                  Y

                                  A

                                  4.0

                                  8.0

                                  B

                                  2.0

                                  2.0

                                  C

                                  4.0

                                  2.0

                                  D

                                  1.0

                                  1.0

                                    Choose your answer

                                    9
                                    1 mark

                                    A student wants to measure the power dissipated by a 10 kΩ resistor.

                                    What equipment should the student use to determine the power dissipated?

                                    • A voltmeter and an ammeter

                                    • A voltmeter, an ammeter and a stopwatch

                                    • A voltmeter only

                                    • An ammeter and a stopwatch

                                    Choose your answer

                                    10
                                    Sme Calculator
                                    1 mark

                                    An electric heater with a power rating of 2000 text  W end text is switched on for 3.0 text  hours end text. The cost of 1 text  kWh end text of electricity is 20 text  cents end text.

                                    What is the total cost of using the heater?

                                    • 12\text{ cents}

                                    • 60\text{ cents}

                                    • 120\text{ cents}

                                    • 360\text{ cents}

                                    Choose your answer