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  2. Electricity - Wikipedia

    en.wikipedia.org/wiki/Electricity

    Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge.Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations.

  3. Units of energy - Wikipedia

    en.wikipedia.org/wiki/Units_of_energy

    A unit of electrical energy, particularly for utility bills, is the kilowatt-hour (kWh); [3] one kilowatt-hour is equivalent to 3.6 megajoules. Electricity usage is often given in units of kilowatt-hours per year or other periods. [4] This is a measurement of average power consumption, meaning the average rate at which energy is transferred ...

  4. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    The joule (/ dʒ uː l / JOOL, or / dʒ aʊ l / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [1] In terms of SI base units, one joule corresponds to one kilogram-square metre per square second (1 J = 1 kg⋅m 2 ⋅s −2).

  5. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    The 5-30 and 5-50 are physically larger, with 1 in (25.4 mm) between power pins; 5-30 also has an L-shaped neutral blade. [17] These larger sizes are uncommon, as twist-locking plugs are generally used for high-current applications. The neutral blade on 5-15P plugs is not always wider than the line blade, since the ground pin enforces polarity.

  6. Electrical measurements - Wikipedia

    en.wikipedia.org/wiki/Electrical_measurements

    Electrical power by the means of electricity meter; S-matrix by the means of network analyzer (electrical) Electrical power spectrum by the means of spectrum analyzer; Measurable dependent electrical quantities comprise: Inductance; Capacitance; Electrical impedance defined as vector sum of electrical resistance and electrical reactance

  7. Electric power - Wikipedia

    en.wikipedia.org/wiki/Electric_power

    Electric power is the rate of transfer of electrical energy within a circuit.Its SI unit is the watt, the general unit of power, defined as one joule per second.Standard prefixes apply to watts as with other SI units: thousands, millions and billions of watts are called kilowatts, megawatts and gigawatts respectively.

  8. Conventional electrical unit - Wikipedia

    en.wikipedia.org/wiki/Conventional_electrical_unit

    A conventional electrical unit (or conventional unit where there is no risk of ambiguity) is a unit of measurement in the field of electricity which is based on the so-called "conventional values" of the Josephson constant, the von Klitzing constant agreed by the International Committee for Weights and Measures (CIPM) in 1988, as well as Δν Cs used to define the second.

  9. V. Narayanan (engineer) - Wikipedia

    en.wikipedia.org/wiki/V._Narayanan_(engineer)

    He studied till 5th grade at the government primary school in Keezha Kattuvilai , [7] from 1969 to 1974. [8] Narayanan then studied at the LMS Higher Secondary School in Zionpuram till 10th grade, [7] from 1974 to 1979. [8] His house did not have electricity till he was in 9th grade. [1]