To Mr. Guarraia's 6th Grade Science Class

To Mr. Guarraia's 6th Grade Science Class

Circuit: A closed-loop path of conduction through which an electric current circuit diagram Scientists usually draw electric circuits using symbols.

cell lam p switc h wires

How you should be thinking about electric Resistance: circuits: when a material resists energy passing through

it (rocks in the river) In a circuit, length, width How you should be thinking about electric circuits:

Current: the actual substance that is flowing through the wires of the Duracell Duracell

Open Circuit: An incomplete path that will not permit an electric current to flow Duracell Duracell

Closed circuit: A COMPLETE PATH FOR ELECTRIC CURRENT There are two main types of circuits: Parall el

and Serie s Duracell Duracell Series Circuits

cuits with only one pathway through whi electrons can flow. Duracell Duracell Parallel Circuits

circuits with more than one pathway through which electrons can flow. Series and Parallel Circuits Comparison Series Circuit

Parallel Circuit Only one path for Definition current to flow Multiple paths for current to flow Total resistance

Resistance increases Examples -Holiday lights Total resistance stays same -Household Current

Adding Resistors to Series: Current in the circuit will go DOWN (lights will dim) If you remove a light bulb or one burns out all go out! Removing a Light

Bulb: If you remove a light bulb or one burns out, the others stay on because the circuit is still closed. Toll RoadCircuit Analogy

Toll Booth Explanation Adding toll booths in series increases resistance and slows the current flow. Adding toll booths in parallel lowers resistance and increases the current flow. Conductor: a material through which electrons

can move easily Examples brass copper aluminum graphite water

Insulator: a substance through which electricity cannot flow readily Examples wood rubber plastic

sulfur glass

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