Current Electricity

Current Electricity

Lesson Review

Take out your notebook

Write down the following words and their definitions

What is current electricity?

an electrical charge in motion.

It consists of a flow of negatively charged electrons from atom to atom through a conductor in an electrical circuit.

The external force that causes the electron current flow of electric charge is called the electromotive force (emf) or voltage.

What are examples of current electricity?

Examples of current electricity are:

1) starting a car

2) turning on a light

3) cooking on an electric stove

4) watching TV

5) shaving with an electric razor

6) playing video games

7) charging a cell phone

What is Direct Current?

• Direct current (DC) is an electric current that is uni-directional, so the flow of charge is always in the same direction. 

• As opposed to alternating current, the direction and amperage of direct currents do not change. It is used in many household electronics and in all devices that use batteries

What are the uses of direct current?

• It is also used to:

• charge batteries, like laptops and cell phones

• They come with an AC adapter that converts alternating current to direct current

Multiple Choice

Electric current comes from the movement or flow of _____ charged electrons around an electric circuit.

• Proton

• Neutral

• Negatively

• Positively

Multiple Choice

What is an electric circuit?

• The path which the electric current takes.

• Movement or flow of negatively charged electrons

• A device to control the flow of electricity

• The current flow of electricity that always goes in one direction

Multiple Choice

The flow/movement of electric charges 

• Voltage
• Resistance 
• Current 
• Circuit 

Multiple Choice

Electric current that flows in only one direction. 

• Voltage 
• Direct Current 
• Alternating Current
• Series Circuit 

Multiple Choice

A material in which electrons are not able to move easily 

• Circuit 
• Insulator 
• Resistance 
• Conductor

Multiple Choice

A material in which electrons are able to move easily

• Circuit
• Insulator 
• Resistance 
• Conductor 

Multiple Choice

What is this in the picture?

• Plastic sticks

• Wires that carry electricity

• Skipping rope

Multiple Choice

A _____________ is a path that is made of parts that work together to allow current to flow.

• Static electricity

• Circuit

• Insulator

Multiple Choice

What type of electricity do we use everyday?

• Static electricity

• Electric current

Poll

Tick the ones you use everyday.

Multiple Select

Which two pictures show static electricity? Choose 2.

Multiple Choice

What is static electricity?

• It flows in a wire.

• It is a build up of electrical charge.

Multiple Select

Which two are the types of electrical charges? Choose 2 answers.

• Negative

• Right

• Positive

• Left

Multiple Choice

All electricity is the result of electrical charge.

• True

• False

Multiple Choice

What is an electric current?

• a build up of electrons

• the difference in charge between 2 points

• the flow of electrons over a circuit

• the opposition to flow of electrons

Multiple Choice

What is an electric current?

• a build up of electrons

• the difference in charge between 2 points

• the flow of electrons over a circuit

• the opposition to flow of electrons