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  2. Sources of electrical energy - Wikipedia

    en.wikipedia.org/wiki/Sources_of_electrical_energy

    Friction is the least-used of the six methods of producing energy. If a cloth rubs against an object, the object will display an effect called friction electricity. The object becomes charged due to the rubbing process, and now possesses an static electrical charge, hence it is also called static electricity. There are two main types of ...

  3. Wireless power transfer - Wikipedia

    en.wikipedia.org/wiki/Wireless_power_transfer

    A concise explanation of these phenomena would come from the 1860s Maxwell's equations [28] by James Clerk Maxwell, establishing a theory that unified electricity and magnetism to electromagnetism, predicting the existence of electromagnetic waves as the "wireless" carrier of electromagnetic energy.

  4. Electricity generation - Wikipedia

    en.wikipedia.org/wiki/Electricity_generation

    Electricity generation is the fourth highest combined source of NO x, carbon monoxide, and particulate matter in the US. [21] According to the International Energy Agency (IEA), low-carbon electricity generation needs to account for 85% of global electrical output by 2040 in order to ward off the worst effects of climate change. [22]

  5. Mains electricity - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity

    Mains electricity or utility power, grid power, domestic power, and wall power, or, in some parts of Canada, hydro, is a general-purpose alternating-current (AC) electric power supply. It is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world.

  6. Electric potential - Wikipedia

    en.wikipedia.org/wiki/Electric_potential

    Electric potential (also called the electric field potential, potential drop, the electrostatic potential) is defined as the amount of work/energy needed per unit of electric charge to move the charge from a reference point to a specific point in an electric field.

  7. History of electric power transmission - Wikipedia

    en.wikipedia.org/wiki/History_of_electric_power...

    [5] [6] [7] Yablochkov candles required high voltage, and it was not long before experimenters reported that the arc lamps could be powered on a 14-kilometre (8.7 mi) circuit. [8] Within a decade scores of cities would have lighting systems using a central power plant that provided electricity to multiple customers via electrical transmission ...