1. Electricity

2. Electrical principles Electrical charge Positive and negative

3. Electrical circuit Source of energy Unbroken path A load (energy is used)

4. Electrical Units Electrical current –The Amp ‘A’ Electrical Voltage –The Volt ‘V’

5. Electrical Power Electrical Resistance –The Ohm ‘  ’ Electrical Energy –The Watt ‘W’ Electrical Power –The Kilo Watt Hour ‘KwH’

6. Types of Current Alternating Current (AC) Direct Current (DC) Earthing

7. Electrical Components Batteries Conductors Insulators Switches Electromagnets

8. Morse code 1839 The worlds first commercial telegraph was built between Paddington and West Drayton. This was also the first commercial use of electricity. 1843 Samuel Morse used electricity and it's electro-magnetism effect to send messages between Washington and Baltimore in the USA.