This document discusses electricity and magnetism. It covers topics such as static electricity, conducting and insulating materials, electric circuits, and uses of electricity and magnetism. The main points are:
1) Static electricity occurs when objects accumulate positive or negative electrical charges. Materials can be conductors or insulators of electricity.
2) Electric current is the movement of electrons through a conducting material in a closed circuit including a current generator, wires, and devices.
3) Electricity has many uses including powering lights, heating, movement, and communication. Magnets attract certain metals and both natural and artificial magnets exist. Magnetism has applications in orientation, data storage, security and identification.
1. Electricity
and
magnetism
Paula crespo gonzalez
2. Electricity
Static electricity is a kind of electricity
that occurs when an object accumalates
electrical charges.the electrical charges
can be positive or negative.
* Neutral
* Electrically charged
3. Conducting
and
insulating
materials
We can classify materials into two
groups:
* Conducting materials
* Insulating materials
6. Electric
materials
Electric current is the movement of
electrical through a conducting material.
The main parts of an electric circuit are:
* Current generator
* Conducting elements or wires
* Devices or receivers
7. Use of
electric
current
Electric current has many uses the
most common are :
* Light ,image and sound
* Heat
* Movement
* Communication
8. Electric
circuits
In addition to these main parts , an
electric circuit often has other compents:
* Switch
* Electricity meter
* protection devices or circuit breakers
