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ELECTRICITY. Circuits. What are they? Circuits are a path along which electricity moves. Closed, series circuit. Kinds of Circuits. Kinds of Circuits. Series Circuits. Parallel Circuits. Voltage.
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Circuits What are they? • Circuits are a path along which electricity moves Closed, series circuit
Voltage Voltage is defined as the amount of work done or the energy required in moving a unit of positive charge (1 coulomb) from a lower potential to a higher potential. Voltage is also called potential difference (PD).
Current • Current is the amount of electric charge (coulombs) flowing past a specific point in a conductor over an interval of one second. 1 ampere = 1 coulomb/second = 6.24 x 1018 electrons • Electron flow is from a lower potential (voltage) to a higher potential (voltage).
Resistance Resistance • Charges passing through any conducting medium collide with the material at an extremely high rate and, thus, experience friction.
Resistance • The rate at which energy is lost depends on the wire thickness (area), length and physical parameters like density and temperature as reflected through the resistively
Ohm’s Law • There is a simple linear relationship between voltage, current and resistance. Georg Ohm
Electricity • Know what it is • Know the different kinds • Know about the different kinds of circuits • Know about conductors and insulators
ElectroBoard • Unfold and write the first matching column on the left hand side. • On the right hand side, write the second matching column. • Place a brad in the first hole on the left side. Locate the correct answer on the right side and place a brad in that hole. • Connect the brads with a strip of aluminum foil. • Tape the ENTIRE strip of foil down between each item! • 9. This creates a series circuit that you can use for review. All you need to test the item is a continuity tester or a series circuit setup.