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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. Fleming's left-hand rule for motors - Wikipedia

    en.wikipedia.org/wiki/Fleming's_left-hand_rule...

    Fleming's left-hand rule. Fleming's left-hand rule for electric motors is one of a pair of visual mnemonics, the other being Fleming's right-hand rule for generators. [1] [2] [3] They were originated by John Ambrose Fleming, in the late 19th century, as a simple way of working out the direction of motion in an electric motor, or the direction of electric current in an electric generator.

  5. Right-hand rule - Wikipedia

    en.wikipedia.org/wiki/Right-hand_rule

    When electricity flows (with direction given by conventional current) in a long straight wire, it creates a cylindrical magnetic field around the wire according to the right-hand rule. The conventional direction of a magnetic line is given by a compass needle. Electromagnet: The magnetic field around a wire is relatively weak. If the wire is ...

  6. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The files are then exported in PDF 1.3 format according to the file header. When taking a screenshot under Mac OS X versions 10.0 through 10.3, the image was also captured as a PDF; later versions save screen captures as a PNG file, though this behavior can be set back to PDF if desired.

  7. Fleming's right-hand rule - Wikipedia

    en.wikipedia.org/wiki/Fleming's_right-hand_rule

    When a conductor such as a wire attached to a circuit moves through a magnetic field, an electric current is induced in the wire due to Faraday's law of induction. The current in the wire can have two possible directions. Fleming's right-hand rule gives which direction the current flows.