What is Electricity? Presentation

What is Electricity? Presentation

Electricity is all around us:

Powering technology:

•Cell phones

•Computers

•Lights

•Heaters

•Air conditioners

Nature:

lightning in a thunderstorm

Electricity is defined as the flow of electric charge

Multiple Choice

Protons have________

• Negative charge

• Positive charge

• No Charge

Multiple Choice

Atom's Nucleus is made of ______

• Protons and neutrons

• Protons and electrons

• Protons, neutrons and electrons

Multiple Choice

charges of the same type ________ each other

• attract

• repel

Electric Potential Energy

A charge’s electric potential energy describes how much stored energy it has

What is electric potential energy? 

Electric potential energy is the energy that is needed to move a charge against an electric field.

You need more energy to move a charge further in the electric field, but also more energy to move it through a stronger electric field.

Think of it as changing KE to PE and vice versa

Follow the link to see how Electric charges interact

https://phet.colorado.edu/sims/html/charges-and-fields/latest/charges-and-fields_en.html

Direction of positive and negative charges forces in an electric field

Positive

Direction of positive and negative charges forces in an electric field

Negative

Multiple Choice

Materials that allow electrons to flow through them easily are called___________

• conductors

• simiconductors

• Insulators

Multiple Choice

Wood is an example for________

• conductors

• simiconductors

• Insulators

Multiple Choice

Copper is an example for ___________

• conductors

• semiconductors

• insulators

Multiple Choice

Insulators are _________

• Materials that allow electrons to flow through them easily

• Materials that do not allow electrons to flow through them easily are called

• Materials that have an electrical conductivity that increases with temperature