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IGCSEPhysicsCambridge (CIE)Exam Questions4. Electricity & MagnetismElectrical Quantities

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

Exam code: 0625 & 0972

4 hours60 questions

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Electrical Quantities

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11 mark

What is the unit of electromotive force?

  • Joule

  • Volt

  • Ampere

  • Watt

Choose your answer

21 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

    31 mark

    Extended tier only

    What is the correct unit of charge?

    • Ampere

    • Coulomb

    • Newton

    • Volt

    Choose your answer

    41 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

    51 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

    61 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

    71 mark

    Extended Tier Only

    Which unit is equivalent to a volt (V)?

    • A/Ω

    • J/C

    • J/s

    • W/C

    Choose your answer

    81 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

    91 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

    11 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

      21 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

      31 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

        41 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

          51 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

            61 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

              71 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

              81 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

              91 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

                101 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

                  111 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

                  121 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

                  131 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

                    141 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

                      151 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

                      161 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

                        11 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

                        21 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

                          31 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

                            41 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

                              51 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

                                61 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

                                71 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

                                81 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

                                  91 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