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Study Guide : Electricity

Learner Guide



Atoms, Electrons and Protons


Everything is made up of particles which are called atoms. Atoms are

made up of tiny particles: neutrons, protons and electrons. Protons

are positively charged and electrons are negatively charged. There are

the same amount of electrons as there are protons, so overall, the

atom has no charge.



Electrons can move from one substance to another. If an atom loses

an electron, it becomes positively charged, as there are more protons

than electrons. If an atom gains an electron, it becomes negatively

charged, as there are more electrons than protons.



Static Electricity

When you rub two objects against each other, they become electrically

charged. For example, when you rub a balloon against your hair, the

balloon gains electrons from your hair, leaving your hair positively

charged. This is why your hair will stand up even when the balloon is

not near: each hair is positively charged so will repel the other hairs,

creating static electricity.


Static Electricity is when there is an imbalance of electrical charge 

within an object. The balloon and hair in this example have static 

electricity because they are electrically charged.


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Related Topics

Solids-liquids-gases                    Forces-movement                          Energy

Waves                                            Electromagnetism                               Space



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