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Electricity Quiz

Total questions: 99

Worksheet time: 50mins

Name
Class
Date
1.

Which phenomenon is commonly observed when we take off synthetic clothes or a sweater, especially in dry weather?

a)

Magnetic attraction

b)

Electric discharge

c)

Chemical reaction

d)

Sound emission

2.

What is a common example of electric discharge seen in nature?

a)

Earthquake

b)

Lightning during thunderstorms

c)

Rainfall

d)

Solar eclipse

3.

Why do we sometimes experience a shock when opening a car door or holding an iron bar after sliding from our seat?

a)

Due to magnetic fields

b)

Due to discharge of electric charges accumulated by rubbing insulating surfaces

c)

Due to heat transfer accumulated by rubbing insulating surfaces-magnetic fields and chemical reaction

d)

Due to chemical reaction

4.

What does the term "static" refer to in the context of electricity?

a)

Anything that moves rapidly

b)

Anything that does not move or change with time

c)

Anything that emits light that produces sound

d)

Anything that produces sound

5.

What does electrostatics deal with?

a)

The study of moving charges

b)

The study of forces, fields, and potentials arising from static charges

c)

The study of chemical reactions magnetic fields moving charges and potentials

d)

The study of magnetic fields

6.

Who is credited with the discovery that amber rubbed with wool or silk cloth attracts light objects?

a)

Aristotle

b)

Thales of Miletus

c)

Archimedes

d)

Socrates

7.

The name "electricity" is derived from which language?

a)

Latin

b)

Greek

c)

French

d)

Arabic

8.

What happens when two glass rods rubbed with wool or silk cloth are brought close to each other?

a)

They attract each other

b)

They repel each other

c)

They remain neutral

d)

They produce light

9.

What is the term used to describe the property that differentiates the two kinds of charges?

a)

Conductivity

b)

Polarity

c)

Magnetism

d)

Density

10.

According to Benjamin Franklin, what is the charge on a glass rod or silk termed as?

a)

Negative

b)

Neutral

c)

Positive

d)

Electrified

11.

What is the result when a glass rod rubbed with silk is brought in contact with the silk again?

a)

They attract each other

b)

They repel each other

c)

They no longer attract or repel each other

d)

They produce heat repel each other attract each other

12.

Which statement best describes the behavior of like and unlike charges?

a)

Like charges attract and unlike charges repel

b)

Like charges repel and unlike charges attract

c)

Both like and unlike charges repel

d)

Both like and unlike charges attract

13.

What is meant by an object being electrically neutral?

a)

It has only positive charge

b)

It has only negative charge

c)

It possesses no electric charge

d)

It is electrified

14.

Why do objects like glass or plastic rods acquire an electric charge when rubbed?

a)

Due to heating

b)

Due to electrification

c)

Due to magnetization

d)

Due to cooling

15.

What conclusion can be drawn when charged bodies are brought in contact and neutralize each other's effect?

a)

They become more electrified

b)

They become electrically neutral

c)

They start attracting other objects

d)

They produce light

16.

What is the purpose of a gold-leaf electroscope?

a)

To measure temperature

b)

To detect charge on a body

c)

To measure mass

d)

To detect magnetic fields

17.

Which of the following statements about electric charge is correct?

a)

Electric charge is created during rubbing

b)

Electric charge is destroyed during rubbing

c)

No new charge is created in the process of rubbing

d)

Electric charge is only present in metals destroyed during rubbing

18.

What happens when a glass rod is rubbed with silk?

a)

The rod loses electrons and becomes positively charged

b)

The rod gains electrons and becomes negatively charged

c)

The silk loses electrons and becomes positively charged

d)

The rod becomes neutral

19.

Which of the following is a conductor?

a)

Glass

b)

Plastic

c)

Metal

d)

Wood

20.

What is the main difference between conductors and insulators?

a)

Conductors have tightly bound electrons, insulators have free electrons

b)

Conductors allow electricity to pass through easily, insulators do not

c)

Insulators allow electricity to pass through easily, conductors do not

d)

Both conductors and insulators allow electricity to pass through easily

21.

Why does a nylon or plastic comb get electrified on combing hair or on rubbing, but a metal article does not?

a)

Metals are insulators

b)

Metals have free electrons that distribute charge over the surface

c)

Plastics are conductors

d)

Nylon is a semiconductor

22.

What is a semiconductor?

a)

A material that allows electricity to pass through very easily

b)

A material that does not allow electricity to pass through at all

c)

A material that offers resistance to the movement of charges intermediate between conductors and insulators

d)

A material that is always positively charged does not allow electricity to pass through at all to pass through very easily

23.

Which of the following statements best describes a point charge?

a)

A charge that is distributed over a large area.

b)

A charge that is always negative.

c)

A charge whose size is very small compared to the distance between charged bodies.

d)

A charge that cannot be measured. charge that is always negative.charge that is always negative.

24.

What is the principle of additivity of charges?

a)

Charges can only be added if they are positive.

b)

The total charge of a system is the algebraic sum of all individual charges.

c)

Charges must be multiplied to find the total charge.

d)

Only negative charges contribute to the total charge.

25.

If a system contains five charges: +1, +2, -3, +4, and -5 (in arbitrary units), what is the total charge of the system?

a)

+15

b)

-1

c)

+1

d)

-5

26.

Which property of electric charge states that the total charge of an isolated system remains unchanged?

a)

Additivity of charge

b)

Conservation of charge

c)

Point charge property

d)

Mass-charge equivalence

27.

When two bodies are rubbed together, what happens to the charges?

a)

Both bodies lose charge.

b)

One body gains charge and the other loses charge.

c)

Both bodies gain charge.

d)

No transfer of charge occurs.

28.

Why is it not possible to create or destroy net charge carried by any isolated system?

a)

Because charges are always positive.

b)

Because the total charge of an isolated system is always conserved.

c)

Because charges can only be transferred, not created or destroyed.

d)

Because charges have no magnitude.

29.

What is the difference between mass and charge as described in the text?

a)

Mass can be positive or negative, but charge is always positive.

b)

Mass has direction, but charge does not.

c)

Mass is always positive, but charge can be either positive or negative.

d)

Mass is a vector, but charge is a scalar.

30.

Which of the following equations correctly represents the quantisation of electric charge?

a)

q = ne

b)

q = n/e

c)

q = e/n

d)

q = n + e

31.

What is the value of the basic unit of charge (e) in the SI system?

a)

1.602192 × 10⁻¹⁹ C

b)

1.602192 × 10¹⁹ C

c)

1.602192 × 10⁻¹⁸ C

d)

1.602192 × 10⁻²⁰ C

32.

In the SI system, what is the unit of electric charge called?

a)

Ampere

b)

Coulomb

c)

Volt

d)

Ohm

33.

If a body contains n₁ electrons and n₂ protons, what is the total amount of charge on the body?

a)

n₁ × e + n₂ × e

b)

n₂ × e + n₁ × (-e) = (n₂ - n₁) e

c)

n₁ × n₂ × e

d)

n₁ + n₂ × e

34.

Why does the charge on any body appear to be continuous at the macroscopic level?

a)

Because the step size of charge is very large

b)

Because the step size of charge is very small

c)

Because charge is not quantised

d)

Because electrons and protons do not exist

35.

Who experimentally demonstrated the quantisation of charge in 1912?

a)

Faraday

b)

Millikan

c)

Newton

d)

Einstein

36.

Which physical law first suggested the quantisation of charge?

a)

Law of Electrolysis

b)

Law of Gravitation

c)

Law of Reflection

d)

Law of Refraction

37.

How many electrons are there in a charge of -1C?

a)

About 6 × 10¹⁸

b)

About 6 × 10¹⁶

c)

About 6 × 10²⁰

d)

About 6 × 10¹⁴

38.

Which of the following is a smaller unit of charge commonly used in electrostatics?

a)

1 mC

b)

1 μC

c)

1 kC

d)

1 nC

39.

What is the charge on an electron by convention?

a)

+e

b)

-e

c)

0

d)

+2e

40.

What is the value of the electronic charge (e)?

a)

1.6 × 10^-19 C

b)

1.6 × 10^-16 C

c)

1.6 × 10^-12 C

d)

1.6 × 10^{-9} C

41.

Approximately how many electrons are contained in a cubic piece of copper of side 1 cm?

a)

2.5×10242.5 \times 10^{24}

b)

2.5×10202.5 \times 10^{20}

c)

2.5×10182.5 \times 10^{18}

d)

2.5×10122.5 \times 10^{12}

42.

How long would it take to collect a charge of 1coulomb1 coulomb if 109electrons10^9 electrons move out of a body every second?

a)

198 years

b)

10 years

c)

1 year

d)

1000 years

43.

If the mass of one cup of water is 250 g, how many molecules of water are present in the cup?

a)

(250/18)×6.02×1023(250/18) \times 6.02 \times 10^{23}

b)

25018×6.02×1020\frac{250}{18} \times 6.02 \times 10^{20}

c)

25018×6.02×1018\frac{250}{18} \times 6.02 \times 10^{18}

d)

25018×6.02×1012\frac{250}{18} \times 6.02 \times 10^{12}

44.

According to Coulomb’s law, the force between two point charges varies:

a)

Inversely as the square of the distance between the charges

b)

Directly as the square of the distance between the charges

c)

Inversely as the distance between the charges

d)

Directly as the distance between the charges

45.

What is the total charge (in coulombs) of all the positive or negative charges in a cup of water weighing 250 g?

a)

1.34 × 10^7 C

b)

1.34 × 10^5 C

c)

1.34 × 10^3 C

d)

1.34 × 10^9 C

46.

Why can the quantisation of charge be ignored at the macroscopic level?

a)

Because the charges involved are enormous compared to the magnitude of charge e

b)

Because the charges involved are very small

c)

Because the charges are always continuous

d)

Because the charges cannot be counted

47.

What does Coulomb’s law state about the force between two point charges?

a)

It is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them

b)

It is directly proportional to the sum of the charges and inversely proportional to the distance between them

c)

It is inversely proportional to the product of the charges and directly proportional to the square of the distance between them

d)

It is directly proportional to the difference of the charges and inversely proportional to the cube of the distance between them

48.

Which law describes the force between two point charges in vacuum?

a)

Coulomb's Law

b)

Newton's Law

c)

Ohm's Law

d)

Faraday's Law

49.

What device did Coulomb use to measure the force between charged metallic spheres?

a)

Torsion balance

b)

Spring scale

c)

Barometer

d)

Voltmeter

50.

According to Coulomb's law, what happens to the force between two charges as the distance between them increases?

a)

The force decreases

b)

The force increases

c)

The force remains constant

d)

The force becomes zero

51.

What is the value of the constant k in SI units for Coulomb's law?

a)

9 × 10⁹ Nm²/C²

b)

6.67 × 10⁻¹¹ Nm²/kg²

c)

3 × 10⁸ m/s

d)

1.6 × 10⁻¹⁹ C

52.

Who was Charles Augustin de Coulomb and what was his significant contribution to physics?

a)

A French physicist who formulated the law of electric force between charges

b)

An English chemist who discovered oxygen

c)

An Italian mathematician who invented calculus

d)

A German astronomer who discovered Neptune

53.

If two charges of 1 C each are placed 1 meter apart in vacuum, what is the magnitude of the force between them according to Coulomb's law?

a)

9 × 10⁹ N

b)

1 N

c)

6.67 × 10⁻¹¹ N

d)

3 × 10⁸ N

54.

Why is the value of k in Coulomb's law considered arbitrary?

a)

It can be chosen as any positive value to define the unit of charge

b)

It depends on the mass of the objects

c)

It is always zero

d)

It is determined by the temperature

55.

Which physical constant is called the permittivity of free space?

a)

ε₀

b)

k

c)

r

d)

q

56.

What is the value of ε₀ (the permittivity of free space) in SI units?

a)

8.854 × 10⁻¹² C² N⁻¹ m⁻²

b)

9 × 10⁹ N

c)

1.602 × 10⁻¹⁹ C

d)

6.022 × 10²³ mol⁻¹

57.

According to Coulomb's law, what is the formula for the force between two point charges q₁ and q₂ separated by a distance r?

a)

F = (1 / 4πε₀) * (q₁q₂ / r²)

b)

F = m * a

c)

F = q * E

d)

F = G * (m₁m₂ / r²)

58.

If two charges q₁ and q₂ are of the same sign, what is the direction of the force F₂₁ on q₂ due to q₁?

a)

Along r̂₂₁, which denotes repulsion

b)

Along r̂₁₂, which denotes attraction

c)

Perpendicular to r̂₂₁

d)

Zero force

59.

What is the vector leading from charge 1 to charge 2 denoted by?

a)

r₂₁ = r₂ - r₁

b)

r₁₂ = r₁ - r₂

c)

r₁ + r₂

d)

r₁ × r₂

60.

Which equation expresses Coulomb’s force law between two point charges q₁ and q₂ located at r₁ and r₂, respectively, in vector form?

a)

F₂₁ = (1 / 4πε₀) * (q₁q₂ / r₂₁²) * r̂₂₁

b)

F = m * a

c)

F = q * E

d)

F = G * (m₁m₂ / r²)

61.

If q₁ and q₂ are of opposite signs, what does the direction of F₂₁ indicate?

a)

Attraction, as expected for unlike charges

b)

Repulsion, as expected for like charges

c)

No force

d)

Perpendicular force

62.

Why do we not need to write separate equations for the forces between like and unlike charges in Coulomb’s law?

a)

Equation (1.3) takes care of both cases

b)

The force is always attractive

c)

The force is always repulsive

d)

The charges must be equal

63.

Given the position vectors r₁ and r₂ for charges q₁ and q₂, how is the unit vector r̂₂₁ defined?

a)

r̂₂₁ = (r₂₁) / |r₂₁|

b)

r̂₂₁ = (r₁₂) / |r₁₂|

c)

r̂₂₁ = r₁ + r₂

d)

r̂₂₁ = r₁ × r₂

64.

Which law states that the force between two charges is inversely proportional to the square of the distance between them?

a)

Coulomb's Law

b)

Newton's Law of Motion

c)

Ohm's Law

d)

Faraday's Law

65.

According to Coulomb's law, what is the mathematical expression for the force F12 between two charges q1 and q2 separated by a distance r12?

a)

F12 = (1 / 4πε₀) * (q1q2 / r12²)

b)

F12 = q1q2 / r12

c)

F12 = q1 + q2 / r12²

d)

F12 = (1 / 4πε₀) * (q1 + q2 / r12)

66.

What does the negative sign in the electric force equation between an electron and a proton indicate?

a)

The force is attractive

b)

The force is repulsive

c)

The force is zero

d)

The force is infinite

67.

What is the ratio of the magnitudes of electric force to gravitational force between an electron and a proton at a distance of 1 Å?

a)

2.4 × 10³⁹

b)

1.3 × 10³⁶

c)

230

d)

1.9 × 10⁻³⁴

68.

Which force is stronger between two protons inside a nucleus, the electric force or the gravitational force?

a)

Electric force

b)

Gravitational force

c)

Both are equal

d)

Cannot be determined

69.

What is the approximate value of the electric force between two protons inside a nucleus (distance ~ 10⁻¹⁵ m)?

a)

230 N

b)

1.9 × 10⁻³⁴ N

c)

2.4 × 10³⁹ N

d)

1.3 × 10³⁶ N

70.

What is the approximate value of the gravitational force between two protons inside a nucleus (distance ~ 10⁻¹⁵ m)?

a)

1.9 × 10⁻³⁴ N

b)

230 N

c)

2.4 × 10³⁹ N

d)

1.3 × 10³⁶ N

71.

Why does the situation get complicated when charges are placed in matter or the intervening space has matter?

a)

Due to the presence of charged constituents of matter

b)

Because the charges disappear

c)

Because the force becomes zero

d)

Because the charges become equal

72.

Which of the following best describes the difference in nature between the gravitational force and the Coulomb force between two protons?

a)

Gravitational force is attractive, Coulomb force is repulsive

b)

Both forces are attractive

c)

Gravitational force is repulsive, Coulomb force is attractive

d)

Both forces are repulsive

73.

What is the magnitude of the electric force exerted by a proton on an electron, given by the formula |F| = (1 / 4πε₀) * (e² / r²)?

a)

2.3 × 10⁻⁸ N

b)

8.987 × 10⁹ N

c)

1.6 × 10⁻¹⁹ N

d)

9.11 × 10⁻³¹ N

74.

Using Newton's second law of motion, what is the acceleration that an electron will undergo when acted upon by a force of 2.3 × 10⁻⁸ N?

a)

2.5 × 10²² m/s²

b)

1.4 × 10¹⁹ m/s²

c)

9.8 m/s²

d)

3.0 × 10⁸ m/s²

75.

What conclusion can be drawn about the effect of gravitational field on the motion of an electron under the action of Coulomb force due to a proton?

a)

The effect of gravitational field is negligible.

b)

The effect of gravitational field is dominant.

c)

The effect of gravitational field is equal to the Coulomb force.

d)

The effect of gravitational field is stronger than the Coulomb force.

76.

What is the value for acceleration of a proton under the action of Coulomb force due to an electron?

a)

1.4 × 10¹⁹ m/s²

b)

2.5 × 10²² m/s²

c)

9.8 m/s²

d)

8.987 × 10⁹ m/s²

77.

A charged metallic sphere A is suspended by a nylon thread. Another charged metallic sphere B is held by an insulating thread. What is the distance between spheres A and B?

a)

10 cm

b)

5 cm

c)

15 cm

d)

20 cm

78.

In Figure 1.4(c), what is the distance between spheres A and B?

a)

5 cm

b)

10 cm

c)

15 cm

d)

20 cm

79.

According to Coulomb's law, what is the formula for the magnitude of the electrostatic force between two point charges q and q' separated by a distance r?

a)

F = (qq') / (4πε₀r²)

b)

F = (qq') / (r)

c)

F = (qq') / (4πε₀r)

d)

F = (qq') / (r²)

80.

When two identical but uncharged spheres touch a charged sphere, how is the charge distributed among them?

a)

Each sphere gets the full charge

b)

Each sphere gets half the charge

c)

Each sphere gets one-third of the charge

d)

Each sphere gets no charge

81.

What is the principle called that states the individual forces on a charge are unaffected by the presence of other charges?

a)

Principle of conservation

b)

Principle of superposition

c)

Principle of distribution

d)

Principle of addition

82.

If the separation between two charged spheres is halved, what happens to the magnitude of the electrostatic force between them?

a)

It is doubled

b)

It is halved

c)

It becomes four times greater

d)

It remains the same

83.

How is the net force on a charge due to several other charges determined?

a)

By multiplying the individual forces

b)

By taking the vector sum of all individual forces

c)

By subtracting the smallest force from the largest

d)

By dividing the total charge by the number of charges

84.

Which law is used to calculate the force between two point charges?

a)

Coulomb's law

b)

Newton's law

c)

Ohm's law

d)

Faraday's law

85.

According to the principle of superposition, how is the total force on a charge in a system of multiple charges determined?

a)

By adding the forces due to each charge vectorially

b)

By multiplying the forces due to each charge

c)

By subtracting the forces due to each charge

d)

By dividing the forces due to each charge

86.

What is the formula for the force on charge $q_1$ due to charge $q_2$ in terms of Coulomb's law?

a)

14πϵ0q1q2r122r^12\frac{1}{4\pi\epsilon_0} \frac{q_1q_2}{r_{12}^2} \hat{r}_{12}

b)

$q_1 + q_2$

c)

q1q2r12\frac{q_1q_2}{r_{12}}

d)

14πϵ0q1q2r12\frac{1}{4\pi\epsilon_0} \frac{q_1q_2}{r_{12}}

87.

What does the principle of superposition state in the context of electrostatics?

a)

The force on a charge is unaffected by the presence of other charges

b)

The force on a charge is doubled in the presence of other charges

c)

The force on a charge is halved in the presence of other charges

d)

The force on a charge is always zero in the presence of other charges

88.

In an equilateral triangle of side $l$, what is the length of the perpendicular from a vertex to the opposite side?

a)

32l\frac{\sqrt{3}}{2}l

b)

l2\frac{l}{2}

c)

$l$

d)

$2l$

89.

What is the distance from a vertex to the centroid in an equilateral triangle of side $l$?

a)

23AD=13l\frac{2}{3}AD = \frac{1}{\sqrt{3}}l

b)

l2\frac{l}{2}

c)

$l$

d)

32l\frac{\sqrt{3}}{2}l

90.

If three equal charges are placed at the vertices of an equilateral triangle, what is the force on a fourth charge placed at the centroid?

a)

The force is the vector sum of the forces due to each vertex charge

b)

The force is zero

c)

The force is the arithmetic mean of the forces due to each vertex charge

d)

The force is the product of the forces due to each vertex charge

91.

What is the magnitude of the force of attraction or repulsion between each pair of charges placed at the vertices of an equilateral triangle?

a)

q24πϵ0l2\frac{q^2}{4\pi\epsilon_0 l^2}

b)

2q24πϵ0l2\frac{2q^2}{4\pi\epsilon_0 l^2}

c)

q22πϵ0l2\frac{q^2}{2\pi\epsilon_0 l^2}

d)

q28πϵ0l2\frac{q^2}{8\pi\epsilon_0 l^2}

92.

If three charges \(q, q, -q\) are placed at the vertices of an equilateral triangle, what is the direction of the total force on charge \(q\) at vertex A?

a)

Along BC

b)

Along AB

c)

Along AC

d)

Perpendicular to the triangle

93.

According to the parallelogram law, what is the total force on charge \(q\) at vertex A due to the other two charges?

a)

F_1 = F \hat{r}_1

b)

F_1 = 2F \hat{r}_1

c)

F_1 = F \hat{r}_2

d)

F_1 = 0

94.

What is the value of the resultant force on charge Q if the system of three charges is rotated through 60° about O?

a)

The resultant force remains zero

b)

The resultant force doubles

c)

The resultant force becomes negative

d)

The resultant force is halved

95.

Which law is used to determine the total force on a charge when multiple forces are acting on it in the context of electric charges at the vertices of a triangle?

a)

Parallelogram law

b)

Newton's law

c)

Coulomb's law

d)

Ohm's law

96.

Which physical quantity is produced by a point charge Q everywhere in its surrounding?

a)

Magnetic field

b)

Gravitational field

c)

Electric field

d)

Thermal field

97.

What is the formula for the electric field E(r) produced by a point charge Q at a distance r?

a)

E(r) = Q / r

b)

E(r) = 1 / (4πε₀) * Q / r² * r̂

c)

E(r) = Q * r²

d)

E(r) = 4πε₀ * Q / r

98.

What does the unit vector r̂ represent in the context of electric field?

a)

The direction from the charge Q to the origin

b)

The direction from the origin to the point r

c)

The magnitude of the electric field

d)

The position of the charge Q

99.

According to the material, what is the effect of a charge incorporated in the existence of?

a)

Gravitational field

b)

Electric field

c)

Magnetic field

d)

Thermal field

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Worksheet

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12th Grade

Word Within The Word Lists 1-4

100 questions

Word Within The Word Lists 1-4

quiz

Worksheet

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3rd Grade - University

Unit 15 Review - Optics and Color

101 questions

Unit 15 Review - Optics and Color

quiz

Worksheet

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9th - 12th Grade

#2-Physical Science Standards EOG Review 24-25

100 questions

#2-Physical Science Standards EOG Review 24-25

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Worksheet

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5th Grade - University

Semester 1 Final Exam Review

96 questions

Semester 1 Final Exam Review

quiz

Worksheet

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8th - 12th Grade

TS ECET 2024 MECHANICAL ENGINEERING

100 questions

TS ECET 2024 MECHANICAL ENGINEERING

quiz

Worksheet

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12th Grade

Energy

100 questions

Energy

quiz

Worksheet

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6th Grade - University