Electricity

Electricity

Revision on electricity, circuit and components as well as electrical safety.

Electricity

Electricity is essential for our daily life operation nowadays.

Can you tell what is electricity?

Multiple Choice

What is electricity?

• A type of energy

• Something that we need to heat up food

• It comes from a battery

• It creates light.

Where does electricity come from?

• Electricity is generated in power plants.

• Power plants converts other types of energy into electricity.

• They can use the movement of water (hydro/tidal) and wind, solar energy and burning of fuel

Multiple Choice

How does the electricity generated in power plants get to our home?

• In an electric circuit

• Transmitted using the power lines

• Carried by courier

• Transported in batteries and cells

Multiple Choice

What do we call electricity that comes from power plants?

• Powerful electricity

• Battery

• Mains electricity

• Socket

Open Ended

Write down TWO appliances that use mains electricity.

Multiple Choice

Which of the following is a battery used by a car?

Multiple Choice

Which of the following is a battery used in a smartphone?

Multiple Choice

Which of the following is a battery used for a wristwatch?

Multiple Choice

Which type of battery do you use for your remote controller?

Electric circuit

In the electrical appliances, there are electric circuit.

- In studying electricity, we also construct electric circuits.

- Electric circuit can be simple and complicated.

Electronic Components

Electric circuit electric components like:

- battery

- lightbulb

- wire

- Switch

​

These electric component can be recognised using their symbols.

Fill in the Blanks

The

is the power source of a simple electric circuit.

Fill in the Blanks

If an electric circuit is complete, a

will light up.

Fill in the Blanks

We use a

to break a circuit when it is not in use.

Fill in the Blanks

Electric current travels through a

in an electric circuit.

Multiple Choice

Other than a lightbulb, which of the following can be used to tell whether an electric circuit is complete?

• Horn

• Blower

• Flashlight

• Buzzer

Multiple Choice

Which of the following is the symbol of a switch?

Multiple Choice

Which of the following is the symbol of a lightbulb?

Multiple Choice

Which of the following is the symbol of a battery?

Multiple Choice

Which of the following is the symbol of a wire?

Multiple Choice

A circuit with two batteries will only work if the positive end on a battery must be connected to the __________ end of another battery in a circuit

• Positive

• Negative

• None

Open Ended

What would happen if there are too many batteries in a circuit?

​Electrical Safety

• ​Electricity can be dangerous.

• ​Electric wires are covered by electrical insulators.

• ​Some electrical insulators are:

  • ​Rubber

  • ​Plastic

• ​Do not play with frayed wires.

Other safety precautions

• Do not touch electrical appliance, switch and socket with wet hands

• ​Do not put your finger in the socket

• ​Do not fly kites or climb trees near power lines

Open Ended

Give ONE precaution that you need to observe in using electricity.

Open Ended

Type THREE things that you have learned throughout this lesson.