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small "packages" of light that act just like small particles

Charging by conduction

Charging an object by allowing it to come into contact with an object which already has an electrical charge

Charging by induction

Charging an object by forcing some of the changes to leave the object

Open circuits

A circuit that does not have a complete connection between the two sides of the battery. As a result current does not flow

Electrical current

The amount of charge that travel through an electrical circuit each second


A measure of how much a metal impedes the flow of electrons

Conventional current

Current that flows from the positive side of the battery to the negative side. this is the way current is drawn in diagrams, even though it is wrong

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