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    http://www.ocr.org.uk/Images/131317-...e-pictures.pdf

    The answer to 5c) is twice the value in a. Why don't the electric potentials from both protons cancel?
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    Potential is a scalar measurement. So has no sense of direction. If the potential due to one positron is x, then the potential due to 2 positrons (no matter where theyre placed around a point) is always 2x.
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    (Original post by Zahid~)
    Potential is a scalar measurement. So has no sense of direction. If the potential due to one positron is x, then the potential due to 2 positrons (no matter where theyre placed around a point) is always 2x.
    Ahh okay, thank you! On a side note: why is this? Why is electric potential scalar, whereas electric field strength is a vector?
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    (Original post by pippabethan)
    Ahh okay, thank you! On a side note: why is this? Why is electric potential scalar, whereas electric field strength is a vector?
    Honestly no idea, i was just told to remember that potential is scalar.
 
 
 
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