Electricity Static Currents Circuits Atoms l Have neutrons

Atoms… l Have neutrons, protons, and electrons. l Protons are positively charged l Electrons

Electrons… l Are located on the outer edges of atoms…they can be moved. l

The world is filled with electrical charges: + - + + + + +

What is this electrical potential called? l Static - Electricity - - - +

Static Electricity l The build up of an electric charge on the surface of

Static Discharge… l Occurs when there is a loss of static electricity due to

Electricity that moves… l Current: The flow of electrons from one place to another.

How can we control currents? l With circuits. l Circuit: is a path for

There are 2 types of currents: l Direct Current (DC) – Where electrons flow

There are 2 types of currents: l Alternating Current (AC) – electrons flow in

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There are 2 types of circuits: l Series Circuit: the components are lined up

http: //www. youtube. com/watch? v=u 7 k 8 wpl_ZU&list=PLAO 5 c. UCypo 9 w-c.

There are 2 types of circuits: l Parallel Circuit – there are several branching

http: //www. youtube. com/watch? v=Mx. H 7 hnu. Bf. C 4&list=PLAO 5 c UCypo

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Electricity Static, Currents, Circuits

Atoms… l Have neutrons, protons, and electrons. l Protons are positively charged l Electrons are negatively charged

Electrons… l Are located on the outer edges of atoms…they can be moved. l A concentration of electrons in an atom creates a net negative charge. l If electrons are stripped away, the atom becomes positively charged.

The world is filled with electrical charges: + - + + + + + -

What is this electrical potential called? l Static - Electricity - - - + ++ ++

Static Electricity l The build up of an electric charge on the surface of an object. l The charge builds up but does not flow. l Static electricity is potential energy. It does not move. It is stored.

Static Discharge… l Occurs when there is a loss of static electricity due to three possible things: l. Friction - rubbing l. Conduction – direct contact l. Induction – through an electrical field (not direct contact)

Electricity that moves… l Current: The flow of electrons from one place to another. l Measured in amperes (amps) l Kinetic energy

How can we control currents? l With circuits. l Circuit: is a path for the flow of electrons. We use wires.

There are 2 types of currents: l Direct Current (DC) – Where electrons flow in the same direction in a wire.

There are 2 types of currents: l Alternating Current (AC) – electrons flow in different directions in a wire

http: //www. youtube. com/wa tch? v=Hq. Mqd. FNWX 4 s#t=2 37

There are 2 types of circuits: l Series Circuit: the components are lined up along one path. If the circuit is broken, all components turn off.

Series Circuit

http: //www. youtube. com/watch? v=u 7 k 8 wpl_ZU&list=PLAO 5 c. UCypo 9 w-c. Fe. Jc 2 QGq. VW 0 n 4 ZV 42 Q 1

There are 2 types of circuits: l Parallel Circuit – there are several branching paths to the components. If the circuit is broken at any one branch, only the components on that branch will turn off.

Parallel Circuit

http: //www. youtube. com/watch? v=Mx. H 7 hnu. Bf. C 4&list=PLAO 5 c UCypo 9 wc. Fe. Jc 2 QGq. VW 0 n 4 ZV 42 Q 1