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Q4_TOPIC 567_ELECTROSTATICS, ELECTRODYNAMICS, ELECTROMAGNETISM

Total questions: 100

Worksheet time: 52mins

Name
Class
Date
1.

Who is the Father of Electricity and the first person who discovered electricity, respectively?

a)

Faraday, Franklin

b)

Franklin, Faraday

c)

Einstein, Edison

d)

Edison, Einstein

2.

Which of the following materials where static electricity was observed by Ancient Greeks?

a)

Amber

b)

Compass

c)

Fur

d)

Dust

3.

Which of the following pairs is NOT correct?

a)

charges at rest = electrostatics

b)

charges in motion = electrodynamics

c)

flow of electrical charges = electricity

d)

flowing charges = no current

4.

What subatomic particles are found inside the nuclues?

a)

proton, electron

b)

electron, neutron

c)

neutron only

d)

proton, neutron

5.

What type of charging process is exhibited in charging your phone wirelessly?

a)

charging by friction

b)

charging by induction

c)

charging by conduction

6.

Which of the following best describes a neutrally charge body?

a)

it has an equal number of protons and neutrons

b)

it has an equal number of protons and electrons

c)

there a balance between neutrons and electrons

d)

there is more protons than electrons

7.

Which of the following DOES NOT explain why a tap water a good conductor of electricity than a distilled water?

a)

because of its impurities present

b)

because it has more salt present

c)

because it has more free electrons

d)

because they don't have free electrons

8.

Which of the following made a great contribution in the better understanding of electricity and its advancement that we are currently enjoying now?

a)

Alessandro Volta and his first electric battery "voltaic pile"

b)

Benjamin Franklin and his lighting rod

c)

Charles Coulomb and his Torsion balance

d)

Michael Faraday and his electric motor

e)

ALL OF THE ABOVE

9.

Which of the diagrams below best represents the charge distribution on a metal sphere when a positively charged plastic tube is placed nearby?

a)

A

b)

B

c)

C

d)

D

10.

What type of transformer should be connected to a radio with a rating of 110 volts if it is to be used in a house with a voltage line of 220 volts?

a)

Step-up Transformer

b)

Step-down Transformer

c)

Transistor

d)

Capacitor

11.

Which of the following objects can electric charges move most easily?

a)

glass tube

b)

metal plate

c)

rubber tire

d)

plastic cup

12.

If a negatively charged rod touches a conductor, the conductor will be charged by what method?

a)

Friction

b)

Induction

c)

Conduction

d)

Convection

13.

It refers to the process of transferring charge between objects by rubbing.

a)

charging by induction

b)

charging by conduction

c)

charging by convection

d)

charging by friction

14.

Which of the following is NOT true about Superposition principle?

a)

it holds for a collection of point charges

b)

each charge will exert a force to another charge as if no others charges are present

c)

it quantifies the amount of electrostatic force between charges

d)

the force between two charges is not affected by the presence of other charges

15.

Select all that describe insulators.

a)

allow charges to flow easily

b)

do not allow charges to flow easily

c)

plastic

d)

metal

e)

surround a wire

16.

Which of the following best describes the electric field of positively charged body?

a)

it is directed outward because a positive charge particle loses electrons

b)

it is directed outward because a positive charge particle gains electrons

c)

it is directed inward because a positive charge particle loses electrons

d)

it is directed inward because a positive charge particle gains electrons

17.

Like charges ___________________ and unlike charges ____________.

a)

attract, repel

b)

repel, attract

c)

neither repel nor attract

d)

either attract or repel

18.

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

a)

The plastic strip acquired extra protons from the cotton.

b)

The plastic strip acquired extra protons from the charging process

c)

Protons were created as the result of the charging process

d)

The plastic strip lost electrons to the cotton during the charging process

19.

If two balloons have the same charge, what will happen if you place them close to each other?

a)

Nothing

b)

They will be attracted

c)

They will pop

d)

They will push each other away.

20.
 A balloon is rubbed against a student's hair and then touched to a wall. The balloon sticks to the wall due to
a)
magnetic forces between the particles of the balloon and the particles of the wall
b)
electrostatic forces between the particles of the balloon and the particles of the wall
c)
magnetic forces between the particles of the wall
d)
electrostatic forces between the particles of the balloon
21.
At which point is the electric field the strongest
a)
A
b)
B
c)
C
d)
D
22.
The electrical force between charges is strongest when the charges are
a)
close together
b)
far apart
c)
 the electric force is constant everywhere.
d)
there is no pattern
23.

What does the Law of Conservation of Charge state?

a)

like charges repel and opposites attract

b)

positive charge fields point away from a charge; negative points toward

c)

charges cannot be created nor destroyed, only transferred

24.

What are the three subatomic particles?

a)

Electrons, Neutrons, and Protons

b)

Electrons, Protons, and Nucleus

25.

Which of the following devices does NOT belong to the group?

a)

transformer

b)

fuses

c)

circuit breakers

d)

three prong plugs

e)

double insulation

26.

What kind of materials are repelled by magnets?

a)

ferromagnetic

b)

diamagnetic

c)

paramagnetic

27.

Who was the first to discover that electric current creates magnetic fields?

a)
Marie Curie
b)
Nikola Tesla
c)
Hans Christian Oersted
d)
Thomas Edison
28.

What poles will have a uniform magnetic when placed towards each other?

a)

North and South

b)

South and South

c)

North and North

29.
An atom gains an electron.  What type of charge does it have now?
a)
positive
b)
negative
c)
No charge
30.
Charged objects are not attracted to neutral objects
a)
True
b)
False
31.

Which of the following pairs is NOT correct?

a)

Resistance = Simon Ohm

b)

Electric Current = Andre Ampere

c)

Potential Difference = Alessandro Volta

d)

Alternating Current = Thomas Edison

32.

What is the standard voltage supply in the Philippines?

a)

220 Volts

b)

240 Volts

c)

250 Volts

d)

110 Volts

33.

Which following will not happen if you use a higher voltage power supply?

Ex: 110V appliance connected to a 220V supply (outlet)

a)

overheating your charger

b)

burning of your charger

c)

no charging will happen

d)

will create a short circuit

34.

What electrical component is used in a circuit to ensure that other components aren’t provided with too much voltage or current?

a)

capacitor

b)

resistor

c)

transistor

d)

diode

35.

Which of the following is the best conductor of electricity?

a)

copper

b)

silver

c)

Glass

d)

aluminum

36.

Which of the following is the best insulator?

a)

Copper

b)

Glass

c)

rubber

d)

diamond

37.

In a circuit, the primary coil has 100 turns while the secondary coil has 200 turns. If the input voltage is 100 volts, then the output voltage should be ….

a)

200 Volts

b)

100 Volts

c)

50 Volts

d)

2000 Volts

38.

When connected to a 110-V power supply, how much current exists in a light bulb that has a resistance of 220 Ohms?

a)

0.50 Ampere

b)

0.5 Ampere

c)

2.00 Amperes

d)

220 Ampere

39.

Which of the following diagrams shows the magnetic field between two like poles?

a)

b)

c)

40.

If a stream of electrons are moving from left to right between the poles of a NON-UNIFORM MAGNETIC FIELD, in what direction will electrons be deflected?

a)

toward the South pole

b)

toward the North pole

c)

perpendicularly inward

d)

no deflection of electrons

41.

When will a body become electrically charged?

a)

when there is equal number of electrons and protons

b)

when there is equal number of electrons and neutrons

c)

when there is an excess electrons

d)

when there is an excess neutrons

42.

Which of the following materials that show NO ELECTRICAL RESISTANCE even at low temperatures and is widely used for long distance electric power transmissions life levitated trains?

a)

semiconductors

b)

superconductors

c)

conductors

d)

insulators

43.

Why are diodes considered an essential electrical component in radios and computers?

a)

They allow the current to flow in one direction

b)

They regulate the amount of voltage supplied

c)

They cut off power when short circuits happen

d)

They store charges

44.

What causes a compass needle to deflect when placed near a wire with an electric current?

a)

due to the wire itself

b)

due to the magnetic field of the magnet inside the compass

c)

due to the magnetic field of the Earth

d)

due to the magnetic field surrounding the wire

45.

What is the term used for a semiconductor wafer where RESISTORS, CAPACITORS, DIODES, and TRANSISTORS are all fabricated?

a)

electric circuit

b)

integrated circuit

c)

regulating circuit

d)

amplifying circuit

46.

Coulomb's Law states that the force of attraction or repulsion between the 2 electrically charged bodies is directly proportional to the product of their changes and ...

a)

inversely proportional to the square of the distance between them.

b)

inversely proportional to the distance between them.

c)

directly proportional to the square of the distance between them.

d)

directly proportional to the distance between them.

47.

Which of the following graphs best describes the RELATIONSHIP of CURRENT and VOLTAGE as explained and stated in OHM's law?

a)

b)

48.

Which device is used to convert electrical energy to mechanical energy?

a)

generator

b)

motor

c)

transformer

d)

transistor

49.

Which device is responsible for converting mechanical energy to electrical energy?

a)

generator

b)

motor

c)

transformer

d)

transistor

50.

What is the main reason why electric current can be so dangerous to humans?

a)

It can cause severe muscle contractions

b)

It can disrupt the normal functioning of the heart's electrical system

c)

It can lead to internal organ damage

d)

It can result in severe burns

51.

What is the name of the device that uses primary and secondary coils to transfer electrical energy through electromagnetic induction?

a)

transformer

b)

refrigerator

c)

generator

d)

motor

52.

A parallel circuit of 3 resistors is supplied by a 12-ampere current from the battery. How much current will each resistor have?

a)

0 AMPERE

b)

12 AMPERE

c)

4 AMPERE

d)

36 AMPERE

53.

Which of the following is not an equation to solve for the POWER rating or POWER dissipated in a circuit?

a)

P = IV

b)

P = I2R

c)

P = IR/V

d)

P = W/t

54.

When object A and B are brought near each other, THEY ATTRACT. Which of the following statements is NOT TRUE about their attraction?

a)

Object A and B are oppositely charged

b)

Object A and B are positively charged

c)

Object A is neutral, and object B is positively charged

d)

Object A is neutral, and object B is negatively charged

55.

What did Michael Faraday discover when a wire is moved to cut across magnetic lines of force?

a)

The wire is attracted to the magnet

b)

The magnetic field is weakened

c)

An electric current is induced in the wire

d)

The wire becomes magnetic

56.

What safety device should be installed in a house to interrupt an electric circuit when the current produced exceeds the specified limit?

a)

galvanometer

b)

transformer

c)

circuit breaker

d)

voltage regulator

57.

What is the term used to describe the flow of charge through a conductor over time?

a)

Electric current

b)

Voltage

c)

Resistance

d)

Power

58.

What is the term used to describe the opposition a material offers to the flow of charges through it?

a)

Electric current

b)

Voltage

c)

Resistance

d)

Power

59.

It is the work done in moving a unit of positive electric charge from one point to another.

a)

Electric current

b)

Potential Difference

c)

Resistance

d)

Power

60.

An electric heater draws a current of 0.50 A when connected to 220 V. Calculate the power rating of the kettle.

a)

0.50 W

b)

110 W

c)

220 W

d)

130, 000 W

61.

What is the term for the force exerted by magnets when they attract or repel each other?

a)

Magnetism

b)

Electricity

c)

Magnet

62.

What term is used to describe the forces exerted by magnets at a distance?

a)

electric force

b)

magnetic force

c)

electric field

d)

magnetic field

63.

In a science experiment, Avery observed that magnets attract each other when unlike poles are held together. This magnetic force is called ____________.

a)

Repulsion

b)

Attraction

64.

What phenomenon occurs when a changing magnetic field induces an electromotive force in a nearby conductor?

a)

Electromagnetic induction

b)

Electromagnetism

c)

Electrodynamics

65.

He published the De Magnete where he suggested that Earth is a giant magnet.

a)

William Gilbert

b)

Pierre Ernest Weiss

c)

Nikola Tesla

66.

He gave the key to the generation of electricity through moving magnetic field.

a)

Hans Christian Oersted

b)

Nikola Tesla

c)

Michael Faraday

67.

What is SI unit of electric current, resistance, potential difference, respectively?

a)

ampere, watt, and ohm

b)

watt, ampere, and ohm

c)

ohm, watt, and ampere

d)

ampere, ohm, and volt

e)

ohm, ampere, and volt

68.
What kind of magnet can be turned on and off?
a)

refrigerator magnet

b)

electromagnet

c)

magnetite

d)

iron

69.

If you wrap more coils around an electromagnet, it will become 

a)

brighter

b)

stronger

c)

weaker

d)

invisible

70.

A magnetic field can affect a compass needle because the needle itself is a

a)

generator

b)

motor

c)

magnet

d)

transformer

71.

Which part of the magnet is considered the most powerful?

a)

fronts

b)

backs

c)

poles

d)

middle

72.

What do we call the region surrounding a magnet?

a)

attraction zone

b)

work area

c)

magnetic field

d)

hot zone

73.

When running a current through a wire, what do the blue lines represent?

a)

The wire spinning

b)

magnetic field

c)

electric field

d)

magnetic flux

74.

What does this image show?

a)

Parallel circuit

b)

Series circuit

c)

Magnet

d)

Electromagnet

75.

Which electromagnet is stronger?

a)

A

b)

B

76.

Which electromagnet is stronger?

a)

A

b)

B

77.

Which electromagnet will pick up MORE paperclips?

a)

A

b)

B

78.

Which of the following defines magnetism?

a)

Magnetism is a contact force.

b)

Magnetism is a force created by magnets.

c)

Magnetism is an invisible force that attracts electrically charged particles.

d)

Magnetism is energy created by magnets.

79.

Which of the following principles explains how an electric motor works?

a)

Magnetic force

b)

Magnetism

c)

Electrolysis

d)

Electromagnetism

80.
How do you make an electromagnet?
a)
wrap a battery in wire and connect it to an iron nail.
b)
wrap a wire with another wire and connect it to an iron nail.
c)
wrap an iron nail in wire and connect it to a power source.
d)
wrap an iron nail in wire and connect it to another iron nail.
81.

Why are electromagnets better than permanent magnets?

a)

they can attract all metals, not just iron

b)

they can attract copper, permanent magnets can't

c)

They can be turned on and off.

d)

they can never run out of energy, because they don't run on electricity

82.

What would happen with the magnets in the picture above?

a)

They would repel

b)

Nothing

c)

They would attract

d)

They would repel and then attract

83.

Which of the following situations exemplifies static electricity?

a)
Rubbing a balloon against hair and then sticking it to a wall
b)
Rubbing two magnets together
c)
Walking on a carpeted floor
d)
Using a microwave oven
84.

What is the difference between static and current electricity?

a)

Static electricity is the build-up of electric charge on the surface of objects (insulator), while current electricity is the flow of electric charge through a conductor.

b)
Static electricity is the flow of electric charge through a conductor, while current electricity is the absence of electric charge on the surface of objects.
c)
Static electricity is the absence of electric charge on the surface of objects, while current electricity is the presence of electric charge on the surface of objects.
d)
Static electricity is the flow of electric charge through a conductor, while current electricity is the build-up of electric charge on the surface of objects.
85.

Why does the comb loses its electrons and ecomes positively charged when rubbed agaisnt a balloon?

a)

the balloon has lower electron affinity

b)

the balloon has higher electron affinity

c)

the comb has higher electron affinity

d)

the comb has lower electron affinity

86.

Which of the following areas has wide application of semiconductors?

a)
Healthcare field
b)
Electronics industry
c)
Construction industry
d)
Agriculture sector
87.

Which area has a wide application of superconductors?

a)
Magnetic resonance imaging (MRI)
b)
Cooking recipes
c)
Construction materials
d)
Astronomy observations
88.

Why are electricity and water a lethal combination?

a)
Water is a good conductor of electricity, which can lead to electric shock or electrocution.
b)
Electricity and water create a pleasant sensation when combined
c)
Water acts as an insulator for electricity
d)
Electricity and water can be safely used together in all situations
89.

How does the concept on Coloumbs law applied in the mechanism of generators and motors?

a)
Coloumb's law is used to determine the efficiency of generators and motors.
b)
Coloumb's law is used to regulate the speed of generators and motors.
c)
Coloumb's law is used to control the temperature of generators and motors.
d)
Coloumb's law is used to understand the interaction between charges in generators and motors.
90.

Where area of engineering does superposition principle concept is widely applied?

a)
Electrical Engineering
b)
Mechanical Engineering
c)
Civil Engineering
d)
Computer Science
91.

Which of the following pairs is not correct?

a)

capacitor = for storing charges

b)

diode = allows charges to floe in one direction

c)

transistor = amplifies electrical signals

d)

resistor = flow of charges

92.

What imprtant lesson can we learn from AC vs DC war of Nikola Tesla and Thomas Edison, respectively?

a)
The importance of sticking to outdated technology
b)
The value of competition over collaboration
c)
The significance of ignoring scientific advancements
d)
The power of collaboration and innovation
93.

Which of the following devices uses Direct Current?

a)
Batteries, solar cells, rectifiers
b)
Hydroelectric generators
c)
Geothermal power plants
d)
Wind turbines
94.

Why is it dangerous to plug a 120 volt rated appliance to a 220 volt power supply?

a)
The power supply will automatically adjust the voltage
b)
It will reduce the electricity bill
c)
The higher voltage can damage the appliance and pose a safety hazard.
d)
The appliance will work more efficiently
95.

What connection is used when we desire a higher current of the circuit?

a)
Perpendicular connection
b)
Diagonal connection
c)
Parallel connection
d)
Series connection
96.

What does Ohm's law state?

a)

Voltage is inversely proportional to resistance

b)

Voltage is directly proportional to current

c)

Current is directly proportional to voltage

d)

Resistance is inversely proportional to current

97.

You saw your friend get electrocuted by a series of lights caused by a short circuit. What could be the best thing to do to save your friend?

a)

Throw water on the person

b)

Leave the person alone and wait for help

c)

Turn off the main power source or unplug the affected device, then call emergency services.

d)

Try to touch the person to check if they are okay

98.

What is main function of grounding?

a)
Providing lighting protection
b)
Regulating voltage
c)
Preventing fire hazards
d)
Preventing electrical shock
99.

In what particular scenario can short circuit be experienced?

a)

When there is an excess of current flowing through a circuit.

b)

When there is a direct connection between the positive and negative terminals of a power source.

c)

When there is a fault in the wiring causing a bypass of the normal load.

d)

When there is a malfunction in an electrical device causing it to draw more current than usual.

100.

What was one of the main reasons why Michael Faraday is credited as the father of Electricity instead of Benjamin Franklin?

a)

Benjamin Franklin lacked the necessary resources to conduct experiments on electricity

b)

Michael Faraday was born before Benjamin Franklin

c)

Michael Faraday made more significant contributions to the understanding of electricity and electromagnetism compared to Benjamin Franklin.

d)

Benjamin Franklin focused more on politics than science

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