1. 4.2 Electrical Energy
Aashna Jain

2. Electrical energy
It is the energy carried by moving electrons in an electric conductor.
Electrons are forced down in a wire and the movement produces electricity.
Electrons travel from one atom to another which makes the atoms imbalanced

3. Measurement Measured in Watts Watts (LED- when turned on)
Watt-hours (Used for a longer time)
Kilowatts and Kilowatt-hours (Electricity bills)
Megawatts (electricity in an entire city)
Gig-watts (Large power plants)
US total electric capacity plants:1100 GW

4. Formula Energy transferred
Energy (J) = Power (W) x time (s)
The power of a piece of electrical equipment depends on the voltage and current
Power (W) = Voltage (V) x current (A)
Energy = Voltage x Current x Time

5. Uses Easy to transmit Generated with AC or DC current Lights
Air conditioners
Television
Computing
Water heating
Refrigeration

6. Examples Lightening (natural) Dynamo, generator (Not natural)
Too powerful to be confined in wires
Also an example of static electricity
Dynamo, generator (Not natural)
Lamp (Light energy)
Heat in kettles, ovens etcetera (Heat energy)

7. Bibliography http://ap-physics.david-s.org/electrical-energy/