Question:

Potential Difference!!?

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we say charges flow frm high potential to low potential

wat do we mean by this?

does it mean this: high potential means-conccentration of charges is high and vice versa for low potential?

if in a circuit, we have at two points ,charges of (+) & (-) and (+) more than (-), then wat is the direction of potential difference? wat is the direction of electrons?

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  1. we say charges flow from high potential to low potential

    what do we mean by this?

    A:  Current flows from high potential to low potential.

    does it mean this: high potential means - concentration of charges is high and vice versa for low potential?

    A: yes.  

    if in a circuit, we have at two points ,charges of (+) & (-) and (+) more than (-), then wat is the direction of potential difference?

    A: from positive to negative

    what is the direction of electrons?

    A: from negative to positive

    This university website shows the charge relationship nicely:

    http://electron9.phys.utk.edu/phys136d/m...


  2. If there is a potential difference then electrons flow from - to + while holes flow from + to -.That is why it is usualy specifyed electron current flow ( in solid state it is called hole flow)

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