Electricity. Electrical principles Electrical charge Positive and negative.

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Presentation transcript:

Electricity

Electrical principles Electrical charge Positive and negative

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

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

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

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

Electrical Components Batteries Conductors Insulators Switches Electromagnets

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