Electricity
1. What is
Electricity? seeNDT
The movement of electrons Free
electrons Franklin
2. Making Electricity Batteries need 2 different electodes and an electrolyte Volta
Different electrolytes make better batteries 

Series mounted batteries to boost voltage  Much research today on batteries 
2. 3 Qualities of electricity: Flow, Force, Resistance Current, Voltage, Resistance How We measure Electricity
3. Pathways for electrons. Electrons flow from  to +
4. Series & Parallel The two ways to arrange circuits

5. Conductors & Insulators Insulators hold on to their electron more tightly
6. V=C*R Voltage = Current x Resistance volts = amps x ohms
Ohm's Law determines the result of changing voltage, current, or resistanc 
Do Problems to understand Example: 120 V = 4 A x 30 Ohms
120 V = 12A x ___Ohms ____V = 3 Amps x 5 Ohms  Two problems to try out ProblemSet Another Problem Set 
7. An electric current creates a surrounding magnetic field Oersted
Research in Magnets 
8. Induction: An electric current in one wire creates an electric current in any neighboring wire. Faraday
9. An changing electric current in one coil of wire creates an electric current in an adjacent coil. The relative number of loops in each coil determines the current and voltage in the 2nd coil. Twice the loops  twice the voltage


Also Power in = Power out or A*V = A*V So the Ratio of the loops increases one & decreases the other
10. How Relays Work Doorbells etc Just Doorbells
A relay is an electrical switch that opens and closes under the control of another electrical circuit. In the original form, the switch is operated by an electromagnet to open or close one or many sets of contacts. It was invented by Joseph Henry in 1835. Because a relay is able to control an output circuit of higher power than the input circuit, it can be considered to be, in a broad sense, a form of an electrical amplifier.
Buzzer Chime 
11. A fixed magnet pulls on one that can move  a motor!
Generator Principle: "A wire cutting through a magnetic field makes Electricity"
Power is how fast energy is used
Watts =
Amps x Volts
Electricity is transmitted from its generation source to where we use it. This path is called the Electric grid.

Electrical Energy is "Transduced" into sound

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