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  2. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    This is the definition declared in the modern International System of Units in 1960. [13] The definition of the joule as J = kg⋅m 2 ⋅s −2 has remained unchanged since 1946, but the joule as a derived unit has inherited changes in the definitions of the second (in 1960 and 1967), the metre (in 1983) and the kilogram . [14]

  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. Power (physics) - Wikipedia

    en.wikipedia.org/wiki/Power_(physics)

    The instantaneous electrical power P delivered to a component is given by = (), where P ( t ) {\displaystyle P(t)} is the instantaneous power, measured in watts ( joules per second ), V ( t ) {\displaystyle V(t)} is the potential difference (or voltage drop) across the component, measured in volts , and

  5. Electric potential energy - Wikipedia

    en.wikipedia.org/wiki/Electric_potential_energy

    The electric potential energy stored in a capacitor is U E = ⁠ 1 / 2 ⁠ CV 2. Some elements in a circuit can convert energy from one form to another. For example, a resistor converts electrical energy to heat. This is known as the Joule effect. A capacitor stores it in its electric field.

  6. Joule heating - Wikipedia

    en.wikipedia.org/wiki/Joule_heating

    Joule heating (also known as resistive, resistance, or Ohmic heating) is the process by which the passage of an electric current through a conductor produces heat.. Joule's first law (also just Joule's law), also known in countries of the former USSR as the Joule–Lenz law, [1] states that the power of heating generated by an electrical conductor equals the product of its resistance and the ...

  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. Today's Wordle Hint, Answer for #1260 on Saturday, November ...

    www.aol.com/todays-wordle-hint-answer-1260...

    Hints and the solution for today's Wordle on Saturday, November 30.

  9. Radiant energy - Wikipedia

    en.wikipedia.org/wiki/Radiant_energy

    joule per square metre per hertz J⋅m −2 ⋅Hz −1: M⋅T −1: Radiant exposure of a surface per unit frequency or wavelength. The latter is commonly measured in J⋅m −2 ⋅nm −1. This is sometimes also called "spectral fluence". H e,λ [nb 4] joule per square metre, per metre J/m 3: M⋅L −1 ⋅T −2: See also: