Introduction aux systèmes électriques - Tension | fr - 221 - 21408
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Tension

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  • Notes d'étude
  • Révisions du sujet
    Prabin K.
    NP
    Prabin K.

    voltage is the electric potential difference between any two points.

    Qayyum M.
    MY
    Qayyum M.

    Can someone clarify me on this, please? "A light globe that is causing a voltage drop of 20 volts may actually mean that a coulomb of charge with 240 joules of energy passes through the globe and exits with only 220 joules of energy." Thanks in advance :)

    Sheneil C.
    JM
    Sheneil C.

    So voltage is energy/Coulomb

    Manish C.
    IN
    Manish C.

    The term voltage refers to the amount of energy given to a coulomb of charge as it passes through a battery or supply, or the amount of energy that a coulomb of charge gives up as it passes through a load. The term voltage refers to an energy change, also called a potential difference; actual energy values are not important. For example, a nine volt battery gives each passing coulomb nine more joules of energy regardless of the energy that the coulomb of charge may already possess. A light globe that is causing a voltage drop of 20 volts may actually mean that a coulomb of charge with 240 joules of energy passes through the globe and exits with only 220 joules of energy. When measuring a voltage value, the voltmeter is essentially comparing energy values either side of a circuit component, hence a voltmeter is placed 'in parallel' in a circuit.

    Anudeep S.
    IN
    Anudeep S.

    I couldn't get the meaning of globe. Can someone help?

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