1. Electricity Friction

2. Electrical Force

4. An object becomes charged by Friction Conduction Induction

5. Charging by Friction

6. Charging by induction.

7. Charging by conduction.

8. Electricity can be described like flowing water.
Potential
Electricity can be described like flowing water.
Current
Load

9. Charge flows in an Electric Circuit.
Switch
Charge is a quantity of electricity.
Charge has the unit coulomb (C).

10. An electric circuit has 4 parts:
Switch
Load
Power Source
Connecting Wires

11. Flowing charge is called current
Flowing charge is called current. The symbol is I and the unit is the ampere or amp (A).
SIM

12. Voltage IS Potential Energy!!! Voltage IS NOT flowing charge.
Voltage is a measure of the potential difference between two places in a circuit.
The unit is the Volt (V).
Voltage IS Potential Energy!!!
Voltage IS NOT flowing charge.

13. Batteries convert chemical energy into electrical energy!
douglasbattery.com
1. Dry Cell Battery
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2. Wet Cell Battery
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14. Power plants use generators to produce power
Power plants use generators to produce power. This generator is called a turbine.

15. AC/DC Direct current (DC) is charge moving in one direction
Alternating current (AC) is charge moving back and forth.
Batteries produce direct current (DC).
The power company uses electrical generators to produce alternating current (AC).
120V of AC is available at your house’s wall sockets.
It is more efficient for power companies to send AC to your house, but most electrical devices need DC.
These devices have components inside them that convert AC into DC.

16. 120V AC 9V DC 1.5V DC www.assignmentpoint.com i.b5z.net/i/u/1572720/i/
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1.5V DC
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17. Electrical Resistance.
This is when current flow is slowed down.
Current seems to lose energy. Actually, the electrical energy is converted into heat and/or light.
The symbol is R.
The unit is the ohm ().
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Water Heater Element
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Light bulb
Stove Top Burners

18. A conductor’s electrical resistance depends on Four Variables.
The length of the conductor.
The cross-sectional area of the conductor.
The material of which the conductor is made.
The temperature of the conductor.

19. V = Voltage I = Current R = Resistance (SIM1) (SIM2)
The relationship between voltage, current, and resistance is V = I · R or Ohm’s Law
V = Voltage
I = Current
R = Resistance
(SIM1) (SIM2)
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Digital Multimeters can measure voltage, current, resistance, and more.
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20. Paying for Electricity.
Electrical Work.
A voltage source does work when releasing charge.
The unit of electrical work is joules (J).
Electrical Power.
The unit of power is called the watt (W).
power = current · voltage
P = I · V
Paying for Electricity.
The electric company charges you based on the amount of power and the amount of time.
The unit is kilowatt-hour (kW-hr).
1 kW = 1,000 Watts

21. Several things in our homes consume electricity.
eere.energy.gov
Several things in our homes consume electricity.

22. The hot water heater uses electricity to heat water.
eere.energy.gov
The hot water heater uses electricity to heat water.

23. Look for this sticker to find out how your appliance compares to others that are similar.
eere.energy.gov

24. SIM Does it cost more to use a 100-W light bulb for 1 hour or 3 hours?
Does it cost more to use a 100-W light bulb for a 60-W light bulb?

25. It is illegal to tamper with it!!!
This meter can usually be found outside our home. It keeps track of the amount of electrical power that your home uses over time.
It is illegal to tamper with it!!!

26. Where does electricity come from?

27. Electricity is not entirely efficient.