Electricity: Interactive Learning Quizzes for Year 7 Science Students

Question 1

Which material allows electricity to flow through it?

Accepted Answer

Copper

Answer

Plastic

Answer

Wood

Question 2

Which material does not allow electricity to flow through it?

Accepted Answer

Plastic

Answer

Copper

Answer

Aluminium

Question 3

Which of these is NOT a type of electrical circuit?

Accepted Answer

Open

Answer

Series

Answer

Parallel

Question 4

Which material allows electricity to flow through it very easily?

Accepted Answer

Copper

Answer

Wood

Answer

Plastic

Answer

Rubber

Question 5

In a circuit, what will happen to the current if the voltage is increased while the resistance remains unchanged?

Accepted Answer

Increase

Answer

Decrease

Answer

Remain the same

Answer

First decrease, then increase

Question 6

Who invented the lightning rod, a device that protects buildings from lightning strikes?

Accepted Answer

Benjamin Franklin

Answer

Thomas Edison

Answer

Nikola Tesla

Question 7

You're presenting to your classmates about how a battery works. Which information is most important to include?

Accepted Answer

Chemical reactions inside a battery

Answer

History of batteries

Answer

Types of batteries

Answer

Environmental impact of batteries

Question 8

To prevent electrical hazards, which safety measure should you take?

Accepted Answer

Use insulated tools

Accepted Answer

Check for damaged wires before using electrical appliances

Answer

Work on energized electrical circuits

Answer

Keep electrical cords near water

Question 9

When working with electricity, which of these actions should you avoid for safety reasons?

Accepted Answer

Working with exposed wires

Answer

Using insulated tools

Answer

Grounding electrical equipment

Answer

Using circuit protection devices

Question 10

In an electrical circuit, which component controls the flow of electricity?

Accepted Answer

Switch

Answer

Resistor

Answer

Power source

Answer

Fuse

Question 11

What action can you take to save energy at home when you're not there?

Accepted Answer

Unplug phone chargers and turn off lights.

Answer

Leave the TV on standby.

Answer

Keep the fridge door open to cool the kitchen.

Question 12

Which of the following is NOT a sustainable way to generate electricity?

Accepted Answer

Burning coal

Answer

Using solar panels

Answer

Using wind turbines

Answer

Building energy-efficient homes

Question 13

Which of the following statements about the energy efficiency of different lighting sources is correct?

Accepted Answer

LED bulbs are the most energy-efficient lighting source, followed by fluorescent bulbs and then incandescent bulbs.

Answer

Incandescent bulbs are more energy-efficient than fluorescent bulbs and LED bulbs.

Answer

Fluorescent bulbs are less energy-efficient than incandescent bulbs but more energy-efficient than LED bulbs.

Answer

All lighting sources have the same energy efficiency.

Question 14

Why do we use fuses in electrical circuits?

Accepted Answer

To protect the circuit and appliances from damage

Answer

To control the flow of electricity

Answer

To make the circuit more efficient

Question 15

Which of the following lists the electricity generation methods from the least to most environmentally friendly?

Accepted Answer

Renewable energy, Nuclear energy, Fossil fuels

Answer

Fossil fuels, Nuclear energy, Renewable energy

Answer

Nuclear energy, Fossil fuels, Renewable energy

Answer

Fossil fuels, Renewable energy, Nuclear energy

Question 16

How does increasing the length of the wire connecting a light bulb to a battery affect the brightness of the bulb?

Accepted Answer

A. The bulb becomes dimmer because the longer wire has more resistance, reducing current flow and power.

Answer

B. The bulb becomes brighter because the longer wire has a smaller cross-sectional area, allowing more electrons to flow.

Answer

C. The bulb remains the same brightness because the length of the wire does not affect the current flow or power.

Question 17

When working with electricity, it's crucial to follow safety measures. Which of the following is NOT a safety precaution?

Accepted Answer

Wear rubber shoes

Answer

Use tools with insulated handles

Answer

Work on a dry surface

Answer

Turn off the power before starting work

Question 18

Which of the following materials is a poor conductor of electricity?

Accepted Answer

Plastic

Answer

Copper wire

Answer

Silver

Answer

Stainless steel

Question 19

What are the three main types of electricity?

Accepted Answer

Static, current, and alternating

Answer

Positive, negative, and neutral

Answer

Direct, indirect, and alternating

Answer

High, medium, and low

Question 20

Which unit is used to measure the flow of electric current?

Accepted Answer

Ampere

Answer

Volt

Answer

Ohm

Answer

Watt

Question 21

Which material conducts electricity the best?

Accepted Answer

Copper

Answer

Rubber

Answer

Plastic

Answer

Wood

Question 22

What is the electrical symbol for voltage?

Accepted Answer

V

Answer

I

Answer

R

Answer

W

Question 23

Which of these is NOT an application of electricity in our daily lives?

Accepted Answer

Photosynthesis

Answer

Lighting

Answer

Heating

Answer

Cooking

Question 24

What is the purpose of a fuse in an electrical circuit?

Accepted Answer

To prevent electrical overload

Answer

To control the flow of current

Answer

To store electrical energy

Answer

To convert electrical energy into heat

Question 25

What is an electric current?

Accepted Answer

The flow of both positive and negative charges

Answer

The flow of positive charges only

Answer

The flow of negative charges only

Answer

The flow of neutral charges

Question 26

What is the unit of measurement for electric current?

Accepted Answer

Ampere

Answer

Volt

Answer

Ohm

Answer

Watt

Question 27

What is the purpose of a fuse?

Accepted Answer

To protect electrical appliances from damage

Answer

To increase the flow of electricity

Answer

To store electricity

Answer

To generate electricity

Question 28

Which of the following is not a conductor of electricity?

Accepted Answer

Plastic

Answer

Copper

Answer

Silver

Answer

Gold

Question 29

What is the function of a transformer?

Accepted Answer

To increase or decrease the voltage of an alternating current

Answer

To convert alternating current to direct current

Answer

To store electricity

Answer

To generate electricity

Question 30

Which of the following is **not** a form of electrical energy?

Accepted Answer

Magnetic electricity

Answer

Static electricity

Answer

Current electricity

Answer

Radio waves

Question 31

What is the SI unit of measurement for electric current?

Accepted Answer

Ampere (A)

Answer

Volt (V)

Answer

Ohm (Ω)

Answer

Watt (W)

Question 32

What is the primary function of a fuse in an electrical circuit?

Accepted Answer

To prevent excessive current flow and protect the circuit

Answer

To allow current to flow freely

Answer

To store electrical energy

Answer

To regulate voltage

Question 33

What is the main purpose of a transformer in an electrical system?

Accepted Answer

To increase or decrease voltage

Answer

To convert AC to DC

Answer

To store electrical energy

Answer

To generate electricity

Question 34

Which of the following is NOT a type of electricity?

Accepted Answer

Magnetic electricity

Answer

Static electricity

Answer

Current electricity

Answer

Electrical potential

Question 35

What is the unit of measurement for electric current?

Accepted Answer

Ampere

Answer

Volt

Answer

Ohm

Answer

Coulomb

Question 36

Which of the following materials conducts electricity well?

Accepted Answer

Metal

Answer

Plastic

Answer

Wood

Answer

Rubber

Question 37

What happens when an electrical circuit is complete?

Accepted Answer

The current flows through the circuit.

Answer

The voltage increases.

Answer

The resistance decreases.

Answer

The power decreases.

Question 38

What is the symbol for the unit of electrical resistance?

Accepted Answer

Ω

Answer

V

Answer

A

Answer

C

Question 39

What is the purpose of a fuse in an electrical circuit?

Accepted Answer

To protect the circuit from overload

Answer

To regulate the flow of current

Answer

To store electrical energy

Answer

To convert AC to DC

Question 40

Which of the following is a renewable source of electricity?

Accepted Answer

Solar energy

Answer

Fossil fuels

Answer

Nuclear energy

Answer

Natural gas

Question 41

Which light bulb uses the least amount of energy?

Accepted Answer

LED bulb

Answer

Incandescent bulb

Answer

Fluorescent bulb

Question 42

What is the unit of measurement for electrical current?

Accepted Answer

Ampere

Answer

Volt

Answer

Ohm

Answer

Watt

Question 43

Which of the following materials is a good conductor of electricity?

Accepted Answer

Copper

Answer

Plastic

Answer

Rubber

Answer

Wood

Question 44

What is the function of a fuse in an electrical circuit?

Accepted Answer

To protect the circuit from overload

Answer

To control the flow of electricity

Answer

To store electrical energy

Answer

To convert electrical energy to heat energy

Question 45

What is the purpose of an electrical generator?

Accepted Answer

To convert mechanical energy into electrical energy

Answer

To store electrical energy

Answer

To control the flow of electricity

Answer

To protect an electrical circuit

Question 46

Which material allows electricity to flow through it easily?

Accepted Answer

Metal

Answer

Plastic

Answer

Wood

Answer

Rubber

Question 47

Which material conducts electricity?

Accepted Answer

Metal

Answer

Plastic

Question 48

What is the unit of measurement for the flow of electricity?

Accepted Answer

Ampere

Answer

Volt

Question 49

Which of these is a renewable source of electricity?

Accepted Answer

Solar panel

Answer

Battery

Question 50

What letter represents a resistor in an electrical diagram?

Accepted Answer

R

Answer

V

Question 51

Why is it important to use a fuse in an electrical circuit?

Accepted Answer

To protect the circuit from too much current

Answer

To regulate the flow of current

Question 52

Which of these is an example of a series circuit?

Accepted Answer

Chain of Christmas lights

Answer

Parallel circuit

Question 53

What makes alternating current (AC) different from direct current (DC)?

Accepted Answer

AC changes direction, while DC flows in one direction

Answer

AC is used in homes, while DC is used in batteries

Question 54

What is the job of a transformer in an electrical system?

Accepted Answer

To increase or decrease the voltage

Answer

To convert AC to DC

Question 55

Which of these is NOT a type of electricity?

Accepted Answer

Magnetic electricity

Answer

Static electricity

Answer

Current electricity

Answer

Lightning

Question 56

Which of the following materials can conduct electricity easily?

Accepted Answer

Metal

Answer

Plastic

Answer

Glass

Answer

Wood

Question 57

Which factor affects the strength of an electric current the most?

Accepted Answer

Resistance

Answer

Voltage

Answer

Temperature

Answer

Length of the circuit

Question 58

What is the unit of measurement for electric current?

Accepted Answer

Amperes

Answer

Volts

Answer

Ohms

Answer

Watts

Question 59

Which of these converts electrical energy into mechanical energy?

Accepted Answer

Electric motor

Answer

Battery

Answer

Resistor

Answer

Capacitor

Question 60

What happens when a complete circuit is formed?

Accepted Answer

Electricity starts to flow

Answer

Electricity is stored

Answer

Electricity is produced

Answer

Electricity is released

Question 61

Which of the following materials is a good insulator?

Accepted Answer

Plastic

Answer

Copper

Answer

Aluminium

Answer

Iron

Question 62

What is the purpose of a fuse in an electrical circuit?

Accepted Answer

To prevent short circuits

Answer

To increase the flow of current

Answer

To store electrical energy

Answer

To regulate voltage

Question 63

Which method of generating electricity has the greatest impact on the environment?

Accepted Answer

Burning coal

Answer

Harnessing the sun's energy

Answer

Utilizing the force of water

Answer

Harnessing the wind's power

Question 64

Metals, such as copper and iron, are good conductors of electricity because they have:

Accepted Answer

Lots of electrons that can move freely

Answer

A positive charge

Answer

A negative charge

Answer

A high resistance