1. Electricity Complete the following notes.

2. Review of Energy & Power Energy is ability to do work Work is a mass moving a distance with an applied force Power is the amount of work done in a given amount of time. Power is or is not energy? What are the six forms of energy? What are the two types of energy? What are the three sources of energy?

3. Electricity Current is the flow of electrons Voltage is the force of electricity Conductors provides an easy path for electricity to flow Load is the part of the circuit that changes the energy movement into some useful form of energy

4. Electricity Amperes (amps) is how the flow of electrons are measured Direct Current (DC) is one direction of flowing electrons Alternating Current (AC) is two way street of flowing electrons

5. Electricity Resistance is an opposing force between hot and negative Ohm is the measure of the resistance Insulator is a material that does not easily conduct an electric current

6. Electricity How to figure out what the amps are: I = P/E I-Amps P-Watts E-Volts How to figure out how much kilowatts used: kWh = P x h 1000 kWh-kilowatt per hour P-Watts h-hours

7. Electricity Lets figure amps 60 Watt Bulb, on 120 Volts of energy, what is the amps? I = 60 / 120 I = 0.5 A (amps) Lets figure amps 34 Watts (3 bulbs), on 120 Volts of energy, what is the amps? I = (34 x 3) / 120 I = 0.85 A

8. Electricity Kilowatt-hours TV, 250 Watts, running for 1.5 hours, what is the kWh? kWh= 250 x 1.5 1000 kWh= 0.375 Kilowatt-hours Heater, 4500 Watts, running for 1 hour, what is the kWh? kWh = 4500 x 1 1000 kWh = 4.5

9. Electricity So we know how to find our Kilowatt-hour figures now. Lets look at how much money it would cost to run an item. Using the heater at 4.5 kWh, it costs per hour ___? Cost = kWh x $0.13 C = 4.5 x 0.13 C = $0.56 per hour

10. Electricity Assignment: Take what information you have got on electric items from your house and figure out how many amps your house needs. Then figure out how many kilowatt-hours you demand plus how much it costs to run these items per hour. On Monday, March 5, we will discuss this plus you will have a test over these notes.