electricty

                       electricity means                                                                              electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives a wide variety of well-known effects, such as lightning, static electricity, electromagnetic induction and electrical current.  

• electric charge: a property of some subatomic particles, which determines their electromagnetic interactions. Electrically charged matter is influenced by, and produces, electromagnetic fields.
• electric field (see electrostatics): an especially simple type of electromagnetic field produced by an electric charge even when it is not moving (i.e., there is no electric current). The electric field produces a force on other charges in its vicinity.
• electric potential: the capacity of an electric field to do work on an electric charge, typically measured in volts.
• electric current: a movement or flow of electrically charged particles, typically measured in amperes.
• electromagnets: Moving charges produce a magnetic field. Electrical currents generate magnetic fields, and changing magnetic fields generate electrical currents.

In electrical engineering, electricity is used for:

• electric power where electric current is used to energise equipment;
• electronics which deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies.

                                                                                                             

asics

Electricity Is a Secondary Energy Source

Source: Stock photography (copyrighted)

Compact fluorescent light bulbs use a fraction of the electricity as incandescent light bulbs to produce the same amount of illumination.

Source: Stock photography (copyrighted)

Electricity is the flow of electrical power or charge. It is both a basic part of nature and one of our most widely used forms of energy.
Electricity is actually a secondary energy source, also referred to as an energy carrier. That means that we get electricity from the conversion of other sources of energy, such as coal, nuclear, or solar energy. These are called primary sources. The energy sources we use to make electricity can be renewable or non-renewable, but electricity itself is neither renewable or nonrenewable.

                                          electricity source                                                                                 The energy sources we use to make electricity can be renewable or non-renewable, but electricity itself is neither renewable nor non-renewable.

common energy units

Btu content of common energy units

• 1 barrel (42 gallons) of crude oil = 5,800,000 Btu (based on U.S. consumption, 2013)
• 1 gallon of gasoline = 124,262 Btu (based on U.S. consumption, 2013)
• 1 gallon of diesel fuel = 138,690 Btu (based on U.S. consumption, 2013)
• 1 gallon of heating oil = 138,690 Btu (based on U.S. consumption, 2013)
• 1 barrel of residual fuel oil = 6,287,000 Btu (based on U.S. consumption, 2013)
• 1 cubic foot of natural gas = 1,025 Btu (based on U.S. consumption, 2013)
• 1 gallon of propane = 91,333 Btu (based on U.S. consumption, 2013)
• 1 short ton of coal = 19,489,000 Btu (based on U.S. consumption, 2013)
• 1 kilowatthour of electricity = 3,412 Btu (based on U.S. consumption, 2