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  2. Electric current - Wikipedia

    en.wikipedia.org/wiki/Electric_current

    The electrons, the charge carriers in an electrical circuit, flow in the opposite direction of the conventional electric current. The symbol for a battery in a circuit diagram. The conventional direction of current, also known as conventional current, [10] [11] is arbitrarily defined as the direction in which positive charges flow.

  3. Passive sign convention - Wikipedia

    en.wikipedia.org/wiki/Passive_sign_convention

    Illustration of the "reference directions" of the current (), voltage (), and power () variables used in the passive sign convention.If positive current is defined as flowing into the device terminal which is defined to be positive voltage, then positive power (big arrow) given by the equation = represents electric power flowing into the device, and negative power represents power flowing out.

  4. Direct current - Wikipedia

    en.wikipedia.org/wiki/Direct_current

    An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC).

  5. Cathode - Wikipedia

    en.wikipedia.org/wiki/Cathode

    A conventional current describes the direction in which positive charges move. Electrons have a negative electrical charge, so the movement of electrons is opposite to that of the conventional current flow. Consequently, the mnemonic cathode current departs also means that electrons flow into the device's cathode from the external circuit. For ...

  6. Glossary of power electronics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_power_electronics

    The condition when conducting current flows through an electronic valve device or an arm. one-quadrant converter An AC/DC or DC converter with one possible direction of DC power flow. operating temperature (capacitor) The temperature of the hottest point on the case of the capacitor in thermal equilibrium. overpressure disconnector

  7. Power-flow study - Wikipedia

    en.wikipedia.org/wiki/Power-flow_study

    In power engineering, the power-flow study, or load-flow study, is a numerical analysis of the flow of electric power in an interconnected system. A power-flow study usually uses simplified notations such as a one-line diagram and per-unit system, and focuses on various aspects of AC power parameters, such as Voltage, voltage angles, real power and reactive power.

  8. Current–voltage characteristic - Wikipedia

    en.wikipedia.org/wiki/Current–voltage...

    In this case, the voltage refers to the voltage across a biological membrane, a membrane potential, and the current is the flow of charged ions through channels in this membrane. The current is determined by the conductances of these channels. In the case of ionic current across biological membranes, currents are measured from inside to outside.

  9. Conventional current flow - Wikipedia

    en.wikipedia.org/?title=Conventional_current...

    This page was last edited on 5 June 2013, at 22:47 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...