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by rcbart on April 13th, 2004

rcbart

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What is "negative" voltage?

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  • by Raghav on March 17th, 2005

    Raghav

    Electrons are by convention negative and protons positive charges. Unlike charges attract and like charges repel. When the net negative charge (electrons) becomes more than net positive charge (protons)that body is said to be negatively charged or said to pocess negative potential (note that charge on an electron is equal and opposite to a proton).
    Now considering the flow of electric current (current is defined as the rate of flow of charge), the current BY CONVENTION is said to flow from positive voltage to negative voltage, i.e when electrons flow from negative potential to positive potential (due to the force that results from the attraction of charges called static force), current is said to flow in the opposite direction BY CONVENTION. A voltage is a dynamic potential (between two ends or bodies) which when maintained contant in time there is a continuous flow of electrons from negative potential to positive potential resulting in a electric current (a constant rate of flow of charges) . So a negative voltage is basically a negative potential maintained constant in time w.r.t another reference potential (ground) that can result in an electric current from the refrence potential to the negative potential when connected by an electric conductor (or a wire). Here the reference potential is said to be positive w.r.t the negative potential.

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    • Thanks. can you scroll down and see what you think about my negative voltage issue (with screen shot?

      Remmik

      by Remmik on December 24th, 2011

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