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by Nelson Mussagy on April 30th, 2004

Nelson Mussagy

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Does the current of a battery flow from negative terminal to positive terminal or is it reversed?

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  • by Anonymous on January 25th, 2006

    Anonymous

    As the questioner mentioned 'the Battery.'

    'AC' or 'Alternating Current' is not an issue...

    All 'Cells' or 'Batteries' are 'DC' or 'Direct Current.'
    & supply the Circuit with a 'EMF' or 'Electro Motive Force'

    The 'Current' is measured in 'Amperes' & The 'EMF' in 'Volts.'

    But are You asking about the Current (In) the battery? or (from) the battery?
    in the curcuit?

    'Conventional flow' was taught, and is accepted still... so not to confuse, was later proved incorrect.

    Conventional flow, within the circuit. Is (As in, leaving the cell from the + & returning to the -. & (in or through) the cell / battery they are shown to flow
    - to +.

    With normal bulbs the direction of current is not an issue,

    but as mentioned in another answer 'LEDs' or 'Light Emiting Diodes'
    there is an issue, as if they are incorrectly fitted they will not illuminate.

    on a 12v DC car, the -Neg side of the Battery is connected to the chasis & or metalic Bodywork of the car and many circuits return to the Battery though the chasis.

    With a multimeter you can place the red probe on the red Pos, terminal of the battery & the black on the Neg, this will show you a Positive reading 12v

    if you were to reverse the probes, then it would display a -12v.

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