1. Question 1 of 100

   A galvanometer is converted into a voltmeter by connecting

   A a low resistance in parallel B a shunt in parallel C a high resistance in series D a diode in series
2. Question 2 of 100

   Outside a bar magnet, magnetic field lines go from

   A north pole to south pole B south pole to north pole C east to west D the centre to the poles
3. Question 3 of 100

   When a glass rod is rubbed with silk, the glass rod becomes

   A negatively charged B neutral C positively charged D magnetised
4. Question 4 of 100

   In a series circuit, the components are connected

   A in separate branches B without any wires C one after another along a single path D only to the earth
5. Question 5 of 100

   The SI unit of magnetic field strength (magnetic flux density) is

   A weber (Wb) B henry (H) C farad (F) D tesla (T)
6. Question 6 of 100

   Like poles of two magnets

   A repel each other B attract each other C never interact D join permanently
7. Question 7 of 100

   A semiconductor diode is mainly used for

   A rectification (converting AC to DC) B amplifying magnetism C storing energy in a field D increasing resistance
8. Question 8 of 100

   Electric power is transmitted at high voltage to

   A increase the current B reduce power loss in the wires C increase resistance D make the wires heavy
9. Question 9 of 100

   The magnetic field at a distance from a long straight wire carrying current I is proportional to

   A I/r B I × r C I/r² D r/I
10. Question 10 of 100

    Joule's law of heating states that heat produced is proportional to

    A IR/t B I²Rt C V/It D R/I²t
11. Question 11 of 100

    The SI unit of electric charge is

    A coulomb (C) B ampere (A) C volt (V) D farad (F)
12. Question 12 of 100

    The earth wire in a plug is connected to

    A the fuse only B the switch C the metal body of the appliance D the bulb filament
13. Question 13 of 100

    An electric generator converts

    A mechanical energy into electrical energy B electrical energy into mechanical energy C chemical energy into heat D light energy into sound
14. Question 14 of 100

    The function of a fuse in an electric circuit is to

    A increase the current B store charge C melt and break the circuit when current is too high D increase the voltage
15. Question 15 of 100

    Like charges

    A attract each other B neutralise each other always C have no force between them D repel each other
16. Question 16 of 100

    The resistance of a 100 W, 220 V bulb is

    A 2.2 Ω B 22,000 Ω C 484 Ω D 48.4 Ω
17. Question 17 of 100

    Kirchhoff's voltage law is based on conservation of

    A charge B mass C energy D momentum
18. Question 18 of 100

    The magnetic effect of electric current was discovered by

    A Faraday B Oersted C Ohm D Volta
19. Question 19 of 100

    A cell of EMF 12 V and internal resistance 1 Ω is connected to a 5 Ω resistor. The terminal voltage is

    A 12 V B 10 V C 6 V D 2 V
20. Question 20 of 100

    The commercial unit of electrical energy is

    A watt B ampere C kilowatt-hour (kWh) D volt
21. Question 21 of 100

    An electroscope is used to

    A measure current B measure power C detect electric charge D generate magnetism
22. Question 22 of 100

    Two resistors of 4 Ω and 6 Ω are connected in series. The equivalent resistance is

    A 2.4 Ω B 24 Ω C 10 Ω D 5 Ω
23. Question 23 of 100

    A capacitor is a device that

    A produces current B amplifies voltage only C measures resistance D stores electric charge
24. Question 24 of 100

    Faraday's law states that the induced EMF in a coil is proportional to the

    A magnitude of flux only B resistance of the coil C rate of change of magnetic flux D length of the wire only
25. Question 25 of 100

    Lenz's law states that the induced current flows in a direction such that it

    A aids the change that produced it B is always clockwise C is always zero D opposes the change that produced it
26. Question 26 of 100

    A charge of 2 C experiences a force of 10 N in an electric field. The field strength is

    A 20 N/C B 0.2 N/C C 12 N/C D 5 N/C
27. Question 27 of 100

    Above its Curie temperature, a ferromagnetic material becomes

    A diamagnetic B paramagnetic C a permanent magnet D a superconductor
28. Question 28 of 100

    The direction of the magnetic field around a straight current-carrying wire is found by the

    A right-hand thumb rule B left-hand rule only C Ohm's law D Snell's law
29. Question 29 of 100

    The SI unit of electrical power is

    A joule (J) B newton (N) C watt (W) D tesla (T)
30. Question 30 of 100

    The force between two point charges of 1 μC each placed 1 m apart in air (k = 9 × 10⁹ N·m²/C²) is

    A 9 × 10⁹ N B 9 × 10⁻⁶ N C 9 × 10⁻³ N D 9 N
31. Question 31 of 100

    The drift velocity of electrons in a copper wire carrying a current is of the order of

    A 10⁻⁴ m/s B 10⁸ m/s C 3 × 10⁸ m/s D 340 m/s
32. Question 32 of 100

    According to Ohm's law, the relation between V, I and R is

    A V = I / R B V = R / I C V = I + R D V = I R
33. Question 33 of 100

    A wire is uniformly stretched to double its length (volume constant). Its resistance becomes

    A 4 times B 2 times C 1/2 D 1/4
34. Question 34 of 100

    The frequency of the household AC supply in Pakistan is

    A 50 Hz B 60 Hz C 100 Hz D 25 Hz
35. Question 35 of 100

    A transformer works only on

    A direct current B both AC and DC equally C static charge D alternating current
36. Question 36 of 100

    A current of 3 A flows through a resistor when 12 V is applied. Its resistance is

    A 36 Ω B 0.25 Ω C 9 Ω D 4 Ω
37. Question 37 of 100

    Fleming's right-hand rule is used to find the

    A force on a magnet B charge on a rod C direction of induced current D resistance of a wire
38. Question 38 of 100

    Which of the following is an electrical insulator?

    A Silver B Aluminium C Iron D Rubber
39. Question 39 of 100

    A battery (cell) converts

    A electrical energy into chemical energy only B light into sound C heat into chemical energy D chemical energy into electrical energy
40. Question 40 of 100

    Which of the following is a good conductor of electricity?

    A Rubber B Copper C Dry wood D Plastic
41. Question 41 of 100

    Two resistors of 6 Ω and 3 Ω are connected in parallel. The equivalent resistance is

    A 2 Ω B 9 Ω C 4.5 Ω D 18 Ω
42. Question 42 of 100

    The power dissipated in a 10 Ω resistor carrying 2 A is

    A 20 W B 40 W C 5 W D 200 W
43. Question 43 of 100

    If 12 J of work is done to move 3 C of charge between two points, the potential difference is

    A 36 V B 0.25 V C 4 V D 9 V
44. Question 44 of 100

    The SI unit of electric current is

    A volt (V) B ampere (A) C ohm (Ω) D watt (W)
45. Question 45 of 100

    A capacitor

    A blocks AC but allows DC B blocks direct current but allows alternating current to pass C allows both DC and AC freely D produces DC
46. Question 46 of 100

    The charge on an electron is

    A negative B positive C zero D changing
47. Question 47 of 100

    We should not touch electric switches with wet hands because

    A water is magnetic B water is an insulator C water conducts electricity and can cause a shock D switches rust faster
48. Question 48 of 100

    If the number of turns per unit length of a solenoid is doubled at constant current, the magnetic field inside becomes

    A half B four times C double D unchanged
49. Question 49 of 100

    A 100 W bulb is used for 10 hours daily for 30 days. The energy consumed is

    A 30 kWh B 3 kWh C 300 kWh D 1 kWh
50. Question 50 of 100

    Lightning is an example of

    A electric discharge (static electricity) B magnetic induction C a chemical reaction D sound energy
51. Question 51 of 100

    A galvanometer is converted into an ammeter by connecting

    A a high resistance in series B a low resistance (shunt) in parallel C a capacitor in parallel D a battery in series
52. Question 52 of 100

    Gauss's law states that the net electric flux through a closed surface is

    A equal to the enclosed charge times ε₀ B equal to the enclosed charge divided by ε₀ C always zero D equal to the surface area
53. Question 53 of 100

    A miniature circuit breaker (MCB) is a safety device that

    A stores charge B increases voltage C creates current D switches off the circuit automatically when current exceeds a limit
54. Question 54 of 100

    When the temperature of a metallic conductor increases, its resistance

    A decreases B remains zero C becomes infinite at once D increases
55. Question 55 of 100

    A 2 kW heater is used for 3 hours. The energy consumed is

    A 2 kWh B 6 kWh C 1.5 kWh D 5 kWh
56. Question 56 of 100

    Every magnet has

    A one pole B three poles C no poles D two poles
57. Question 57 of 100

    Two capacitors of 2 μF and 3 μF are connected in parallel. The equivalent capacitance is

    A 1.2 μF B 6 μF C 0.2 μF D 5 μF
58. Question 58 of 100

    Which of the following is attracted by a magnet?

    A Plastic ruler B Iron nail C Wooden stick D Glass marble
59. Question 59 of 100

    The potential difference between two points is the

    A work done per unit charge in moving it between the points B charge per unit time C power per unit current D force per unit area
60. Question 60 of 100

    A wire is cut into two equal halves. The resistance of each half is

    A half of the original B double the original C the same D one-fourth of the original
61. Question 61 of 100

    An electromagnet is made by winding an insulated wire around a

    A soft iron core and passing current B plastic rod C wooden stick D glass tube
62. Question 62 of 100

    A conductor of length 0.2 m carries 4 A in a perpendicular magnetic field of 0.5 T. The force on it is

    A 0.1 N B 4 N C 0.4 N D 40 N
63. Question 63 of 100

    A diamagnetic substance such as bismuth is

    A weakly repelled by a magnet B strongly attracted by a magnet C strongly magnetised permanently D unaffected by any field
64. Question 64 of 100

    A 60 W and a 100 W bulb (both rated 220 V) are connected in series across 220 V. Which glows brighter?

    A The 60 W bulb B The 100 W bulb C Both equally D Neither glows
65. Question 65 of 100

    The peak voltage of the AC supply is about 311 V. Its RMS value is about

    A 311 V B 440 V C 155 V D 220 V
66. Question 66 of 100

    The SI unit of potential difference is

    A ampere (A) B ohm (Ω) C joule (J) D volt (V)
67. Question 67 of 100

    A 2 Ω resistor is in series with a parallel combination of 6 Ω and 3 Ω. The total resistance is

    A 11 Ω B 2 Ω C 9 Ω D 4 Ω
68. Question 68 of 100

    A capacitor stores 10 μC of charge at a potential difference of 5 V. Its capacitance is

    A 50 μF B 0.5 μF C 2 μF D 5 μF
69. Question 69 of 100

    Fleming's left-hand rule is used to find the

    A direction of induced current B direction of electric field C direction of force on a current-carrying conductor in a magnetic field D direction of light
70. Question 70 of 100

    A short circuit occurs when

    A the bulb is too bright B the switch is open C the voltage is zero D the live and neutral wires touch, giving a very low resistance path
71. Question 71 of 100

    Electric field lines start from

    A negative charges and end on positive charges B positive charges and end on negative charges C the Earth only D neutral bodies
72. Question 72 of 100

    Electromagnetic induction was discovered by

    A Isaac Newton B Alexander Volta C Michael Faraday D James Watt
73. Question 73 of 100

    An electric motor converts

    A mechanical energy into electrical energy B electrical energy into mechanical energy C heat energy into light D sound energy into electrical energy
74. Question 74 of 100

    A switch is used to

    A open or close a circuit B produce current C store energy D measure voltage
75. Question 75 of 100

    The heating element of an electric heater is made of nichrome because it has

    A low resistivity B low melting point C high resistivity and a high melting point D high magnetism
76. Question 76 of 100

    A compass needle is a small magnet that always points

    A east–west B roughly north–south C up–down D towards the Sun
77. Question 77 of 100

    An ammeter is used to measure

    A electric current B voltage C resistance D power
78. Question 78 of 100

    A charge of 10 C flows through a wire in 2 s. The current is

    A 20 A B 0.2 A C 12 A D 5 A
79. Question 79 of 100

    In a parallel circuit, the potential difference across each branch is

    A different for each branch B the same C zero D equal to the current
80. Question 80 of 100

    Soft iron is used for electromagnets and steel for permanent magnets because

    A steel is lighter B soft iron is cheaper only C soft iron loses magnetism easily while steel retains it D soft iron is non-magnetic
81. Question 81 of 100

    The Earth's geographic north is near its magnetic

    A north pole B south pole C equator D east pole
82. Question 82 of 100

    Alternating current (AC)

    A flows in one direction only B has zero frequency C is produced by a cell only D reverses its direction periodically
83. Question 83 of 100

    According to Coulomb's law, if the distance between two point charges is doubled, the force becomes

    A half B double C four times D one-fourth
84. Question 84 of 100

    A step-up ideal transformer has a turns ratio of 1 : 10. If the primary current is 10 A, the secondary current is

    A 1 A B 100 A C 10 A D 0.1 A
85. Question 85 of 100

    The energy stored in a 2 μF capacitor charged to 10 V is

    A 100 μJ B 200 μJ C 20 μJ D 1 μJ
86. Question 86 of 100

    A transformer with 1,000 primary turns steps down 220 V to 11 V. The number of secondary turns is

    A 20 B 50 C 500 D 2,000
87. Question 87 of 100

    A step-up transformer

    A decreases the voltage B increases the voltage and has more turns in the secondary coil C has fewer turns in the secondary D changes AC to DC
88. Question 88 of 100

    Household appliances are connected in parallel because

    A they use less current B each gets the full supply voltage and works independently C the wires cost less D the current stays constant
89. Question 89 of 100

    A magnet loses its magnetism when it is

    A kept in a box B placed near wood C kept in water D heated strongly or hammered
90. Question 90 of 100

    A plastic comb rubbed on dry hair can pick up small pieces of paper because of

    A magnetism B gravity C static electricity D sound waves
91. Question 91 of 100

    An appliance works at 220 V and draws 5 A. Its power is

    A 44 W B 225 W C 4,400 W D 1,100 W
92. Question 92 of 100

    The new international colour for the live wire in household wiring is

    A blue B green C black always D brown
93. Question 93 of 100

    The magnetic field produced by a current-carrying solenoid is similar to that of a

    A bar magnet B point charge C single wire D plane mirror
94. Question 94 of 100

    The resistance of a wire

    A decreases with its length B increases with its length C is independent of its length D decreases with its temperature in metals
95. Question 95 of 100

    The SI unit of electrical resistance is

    A ohm (Ω) B ampere (A) C volt (V) D coulomb (C)
96. Question 96 of 100

    Kirchhoff's current law is based on conservation of

    A energy B charge C momentum D mass
97. Question 97 of 100

    A voltmeter is connected

    A in series with the component B only across a battery in series C in parallel across the component D on the earth wire
98. Question 98 of 100

    A lightning conductor is installed on tall buildings to

    A attract more clouds B safely carry lightning charge to the ground C produce electricity D increase the temperature
99. Question 99 of 100

    The filament of an electric bulb is made of

    A copper B tungsten C iron D aluminium
100. Question 100 of 100

     The SI unit of magnetic flux is

     A tesla (T) B henry (H) C gauss (G) D weber (Wb)

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