1.
The branch of physics that deals with stationary electric charges is called: A) Electrodynamics
B) Electrostatics
C) Magnetostatics
D) Electronics
2.
The SI unit of electric charge is: A) Volt
B) Ampere
C) Coulomb
D) Ohm
3.
The charge on an electron is: A) +1.6 × 10⁻¹⁹ C
B) -1.6 × 10⁻¹⁹ C
C) +1.6 × 10⁻¹⁶ C
D) -1.6 × 10⁻¹⁶ C
4.
Like charges: A) Attract each other
B) Repel each other
C) Neutralize each other
D) Do not interact
5.
Unlike charges: A) Repel each other
B) Attract each other
C) Become neutral
D) Remain stationary
6.
The law stating that electric charge can neither be created nor destroyed is: A) Coulomb’s Law
B) Gauss’s Law
C) Conservation of Charge
D) Ohm’s Law
7.
The force between two charges is given by: A) Newton’s Law
B) Faraday’s Law
C) Coulomb’s Law
D) Ampere’s Law
8.
Coulomb’s law is applicable to: A) Point charges
B) Moving charges only
C) Magnets
D) Current-carrying conductors
9.
The electrostatic force varies inversely with: A) Distance
B) Square of distance
C) Cube of distance
D) Mass
10.
The proportionality constant in Coulomb’s law is: A) k
B) G
C) h
D) μ
11.
The value of Coulomb’s constant k is approximately: A) 9 × 10⁹ Nm²/C²
B) 9 × 10⁶ Nm²/C²
C) 6.67 × 10⁻¹¹ Nm²/kg²
D) 3 × 10⁸ m/s
12.
The force between two charges is: A) Scalar
B) Vector
C) Tensor
D) Dimensionless
13.
A material that allows charges to move freely is: A) Insulator
B) Dielectric
C) Conductor
D) Semiconductor
14.
Glass is generally: A) Conductor
B) Insulator
C) Superconductor
D) Electrolyte
15.
Charging by rubbing is called: A) Induction
B) Conduction
C) Friction
D) Polarization
16.
The process of charging without contact is: A) Conduction
B) Induction
C) Friction
D) Ionization
17.
An electroscope is used to detect: A) Current
B) Voltage
C) Electric charge
D) Resistance
18.
The gold-leaf electroscope works on: A) Attraction of unlike charges
B) Repulsion of like charges
C) Magnetic effect
D) Heating effect
19.
The electric field intensity is defined as: A) Force per unit mass
B) Force per unit charge
C) Energy per unit charge
D) Charge per unit area
20.
The SI unit of electric field is: A) N/C
B) J/C
C) C/N
D) V·m
21.
Electric field lines originate from: A) Negative charges
B) Positive charges
C) Neutral bodies
D) Earth
22.
Electric field lines terminate on: A) Positive charges
B) Neutral bodies
C) Negative charges
D) Conductors only
23.
Electric field lines never: A) Start from positive charges
B) End on negative charges
C) Intersect each other
D) Form curves
24.
The density of electric field lines indicates: A) Charge only
B) Potential only
C) Field strength
D) Resistance
25.
Electric potential is: A) Force per charge
B) Work done per unit charge
C) Charge per work
D) Current per resistance
26.
The SI unit of electric potential is: A) Volt
B) Coulomb
C) Ampere
D) Farad
27.
One volt equals: A) 1 J/C
B) 1 C/J
C) 1 N/C
D) 1 J·C
28.
The potential at infinity is usually taken as: A) 1 V
B) 100 V
C) Zero
D) Infinite
29.
Equipotential surfaces are always: A) Parallel to electric field
B) Perpendicular to electric field
C) Circular only
D) Magnetic in nature
30.
No work is done when a charge moves: A) Along electric field
B) Against electric field
C) Along an equipotential surface
D) Near a conductor
31.
The electric potential due to a point charge is: A) kQ/r
B) kQr
C) kQ/r²
D) kQr²
32.
The electric field due to a point charge is: A) kQ/r
B) kQr²
C) kQ/r²
D) kQr
33.
The direction of electric field at a point is the direction of: A) Negative test charge force
B) Positive test charge force
C) Current flow
D) Magnetic field
34.
The electric field inside a conductor in electrostatic equilibrium is: A) Maximum
B) Minimum
C) Zero
D) Infinite
35.
Excess charge on a conductor resides: A) At the center
B) Uniformly throughout volume
C) On the surface
D) At the bottom
36.
A dielectric is: A) Good conductor
B) Magnetic material
C) Insulating material
D) Semiconductor
37.
The process of separation of charges in a dielectric is called: A) Conduction
B) Polarization
C) Ionization
D) Radiation
38.
Capacitance is the ratio of: A) Q/V
B) V/Q
C) IV
D) R/I
39.
The SI unit of capacitance is: A) Volt
B) Coulomb
C) Farad
D) Ohm
40.
A capacitor stores: A) Heat energy
B) Magnetic energy
C) Electrical energy
D) Nuclear energy
41.
The capacitance of a parallel plate capacitor increases when: A) Plate distance increases
B) Plate area decreases
C) Plate area increases
D) Voltage increases
42.
Capacitance is inversely proportional to: A) Plate area
B) Plate separation
C) Charge
D) Potential
43.
The capacitance of a parallel plate capacitor is: A) εA/d
B) εd/A
C) Ad/ε
D) ε/A
44.
The dielectric constant is also known as: A) Relative permittivity
B) Conductivity
C) Resistivity
D) Susceptibility
45.
The dielectric constant of vacuum is: A) 0
B) 1
C) 8.85
D) 100
46.
Energy stored in a capacitor is: A) CV²
B) ½CV²
C) QV²
D) C²V
47.
Two capacitors connected in series have: A) Same voltage
B) Same charge
C) Infinite capacitance
D) Zero charge
48.
Capacitors connected in parallel have: A) Same charge
B) Same resistance
C) Same voltage
D) Same capacitance
49.
Equivalent capacitance in parallel is: A) Product over sum
B) Sum of capacitances
C) Reciprocal sum
D) Difference of capacitances
50.
For capacitors in series, equivalent capacitance is: A) Greater than largest capacitor
B) Sum of capacitances
C) Less than smallest capacitor
D) Equal to average capacitance
51.
The electric field inside a charged hollow conductor is: A) Infinite
B) Uniform
C) Zero
D) Variable
52.
The phenomenon responsible for lightning is: A) Electrostatic discharge
B) Magnetism
C) Induction heating
D) Conduction only
53.
A lightning conductor protects buildings by: A) Storing charge
B) Reflecting charge
C) Providing safe path to earth
D) Producing current
54.
The charge of proton is: A) +1.6 × 10⁻¹⁹ C
B) -1.6 × 10⁻¹⁹ C
C) Zero
D) +3.2 × 10⁻¹⁹ C
55.
The quantization of charge was demonstrated by: A) Rutherford
B) Millikan
C) Faraday
D) Maxwell
56.
The smallest unit of charge is: A) Proton charge
B) Coulomb
C) Elementary charge
D) Ampere
57.
Electric flux is represented by: A) E
B) Φ
C) V
D) C
58.
Gauss’s law relates electric flux to: A) Electric current
B) Enclosed charge
C) Resistance
D) Potential
59.
The SI unit of electric flux is: A) N·m²/C
B) N/C
C) C/N
D) Volt
60.
Electric field lines around a positive charge are: A) Circular
B) Inward radial
C) Outward radial
D) Parallel
61.
The force between charges acts along: A) Perpendicular direction
B) Line joining charges
C) Circular path
D) Random direction
62.
The electric field at the center of a uniformly charged spherical shell is: A) Infinite
B) Maximum
C) Zero
D) Variable
63.
Potential inside a charged conducting sphere is: A) Constant
B) Zero only
C) Infinite
D) Variable
64.
The permittivity of free space is: A) 8.85 × 10⁻¹² C²/Nm²
B) 9 × 10⁹ Nm²/C²
C) 6.67 × 10⁻¹¹
D) 1.6 × 10⁻¹⁹ C
65.
A neutral body contains: A) No charges
B) Equal positive and negative charges
C) Positive charges only
D) Negative charges only
66.
Electrostatic force is: A) Long range force
B) Short range force
C) Nuclear force
D) Contact force
67.
The electric field due to a negative charge is directed: A) Away from charge
B) Toward charge
C) Upward only
D) Downward only
68.
Potential difference is measured using: A) Ammeter
B) Galvanometer
C) Voltmeter
D) Electroscope
69.
The work done in moving a charge depends on: A) Potential difference
B) Resistance
C) Current
D) Mass
70.
Electric potential is a: A) Vector quantity
B) Scalar quantity
C) Tensor quantity
D) Dimensionless quantity
71.
Capacitance depends on: A) Geometry of conductors
B) Charge stored only
C) Voltage only
D) Current only
72.
The field lines are closer where field is: A) Weak
B) Zero
C) Strong
D) Constant
73.
The electric field at an equipotential surface is: A) Tangential
B) Parallel
C) Perpendicular
D) Zero always
74.
The net charge of an isolated system remains: A) Variable
B) Increasing
C) Constant
D) Decreasing
75.
Charge is a: A) Scalar quantity
B) Vector quantity
C) Tensor quantity
D) Derived vector
76.
An induced charge appears due to: A) Contact only
B) Friction only
C) Nearby charged body
D) Heating
77.
The electrostatic unit of charge in CGS system is: A) Coulomb
B) Statcoulomb
C) Volt
D) Farad
78.
The electric field outside a charged sphere behaves as if: A) Charge concentrated at center
B) Charge absent
C) Charge spread infinitely
D) Field zero
79.
The capacitance of an isolated sphere depends on: A) Radius
B) Mass
C) Density
D) Current
80.
The force between charges in vacuum is: A) Maximum
B) Minimum
C) Zero
D) Constant irrespective of distance
81.
When distance doubles, Coulomb force becomes: A) Double
B) Half
C) One-fourth
D) Four times
82.
If charge doubles, force becomes: A) Half
B) Double
C) Four times
D) One-fourth
83.
The electric field is strongest: A) Far from charge
B) Near charge
C) At infinity
D) Same everywhere
84.
A Faraday cage shields against: A) Sound waves
B) Magnetic field only
C) External electric fields
D) Heat transfer
85.
Electric field lines are: A) Imaginary lines
B) Physical wires
C) Material lines
D) Current paths
86.
Potential energy of like charges is: A) Negative
B) Positive
C) Zero
D) Infinite always
87.
Potential energy of unlike charges is: A) Positive
B) Infinite
C) Negative
D) Constant
88.
The dimension of capacitance is: A) C/V
B) V/C
C) J/C
D) N/C
89.
The earth acts as: A) Infinite charge reservoir
B) Insulator
C) Dielectric
D) Capacitor only
90.
Grounding means: A) Charging body
B) Connecting to earth
C) Heating body
D) Insulating body
91.
Electric potential energy is measured in: A) Joule
B) Coulomb
C) Volt
D) Farad
92.
A charged comb attracts paper bits due to: A) Gravitation
B) Magnetism
C) Electrostatic induction
D) Friction only
93.
The electric field inside a cavity of a conductor without internal charge is: A) Infinite
B) Constant
C) Zero
D) Maximum
94.
Electrostatic force obeys: A) Inverse square law
B) Inverse law
C) Cube law
D) Linear law
95.
The potential due to multiple charges is found using: A) Product rule
B) Principle of superposition
C) Gauss theorem only
D) Conservation law
96.
Electric field obeys: A) Conservation principle
B) Superposition principle
C) Ohm’s law
D) Lenz’s law
97.
A capacitor blocks: A) AC only
B) DC after charging
C) Both AC and DC always
D) Neither AC nor DC
98.
The energy density of electric field is proportional to: A) E
B) E²
C) 1/E
D) √E
99.
The electrostatic force is: A) Conservative force
B) Non-conservative force
C) Contact force
D) Frictional force
100.
The unit of dielectric constant is: A) Farad
B) Ohm
C) No unit
D) Volt
Answer Key
1-B, 2-C, 3-B, 4-B, 5-B, 6-C, 7-C, 8-A, 9-B, 10-A
11-A, 12-B, 13-C, 14-B, 15-C, 16-B, 17-C, 18-B, 19-B, 20-A
21-B, 22-C, 23-C, 24-C, 25-B, 26-A, 27-A, 28-C, 29-B, 30-C
31-A, 32-C, 33-B, 34-C, 35-C, 36-C, 37-B, 38-A, 39-C, 40-C
41-C, 42-B, 43-A, 44-A, 45-B, 46-B, 47-B, 48-C, 49-B, 50-C
51-C, 52-A, 53-C, 54-A, 55-B, 56-C, 57-B, 58-B, 59-A, 60-C
61-B, 62-C, 63-A, 64-A, 65-B, 66-A, 67-B, 68-C, 69-A, 70-B
71-A, 72-C, 73-C, 74-C, 75-A, 76-C, 77-B, 78-A, 79-A, 80-A
81-C, 82-C, 83-B, 84-C, 85-A, 86-B, 87-C, 88-A, 89-A, 90-B
91-A, 92-C, 93-C, 94-A, 95-B, 96-B, 97-B, 98-B, 99-A, 100-C