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Electricity and Circuits Notes Electric Charges What are the three subatomic particles and what are their charges? The Flow of Charges How Charges Interact Which subatomic particle can move from one object to another? When two objects with the SAME charge come into contact, they ____________________. What does the addition of electrons do to the charge of an object? When two objects with DIFFERENT charges come into contact, they _________________. What does the removal of electrons do to the charge of an object? Electric Current • What is an electric current? • What is the unit of measurement for current? Potential Difference • What is potential difference? • What causes potential difference? • Electric charges will always flow from a region of ___________ potential energy to a region of ___________ potential energy. A Basic Circuit Voltage • What is it? • What unit is used to measure voltage? Basic Circuits • A circuit is ________________________________________________________________. Parts of a Circuit Energy Source – Load – Conductor – Resistor – Switch – Circuit Switches Open Switch Closed Switch • When an electric current reaches an open switch, the current __________________. – This creates an __________________ circuit. • When an electric current reaches a closed switch, the current _________________. – This creates a __________ circuit. • Why would you want a switch in a circuit? Types of Circuits • Two types of circuits: – ____________________ Circuit • Provides _____________________________ path for the flow of current. – ____________________ Circuit • Offers ______________________________ path for the flow of electricity. Series Circuits • How are loads set up in a series circuit? • The current in a series circuit has to flow through _______________________ before passing through the next. Series Circuit • When you disconnect one of the bulbs in your circuit, what happens to the other bulbs? • What happens to the brightness of bulbs as you add more in a series circuit? • Why? Advantages of Series Circuits Disadvantages of Series Circuits Parallel Circuits • In a parallel circuit, each load has its own ______________________________________. Parallel Circuit • When you disconnect one of the bulbs in your circuit, what happens to the other bulbs? • What happens to the brightness of bulbs as you add more in a parallel circuit? • Why? Advantages of Parallel Circuits Disadvantages of Parallel Circuits