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B Electric field and potential

  1. Apr 7, 2017 #1
    I understand that if electric field at any point is 0, it implies that potential is constant not necessarily 0. But what if the potential at a point is 0? Does it imply that electric field is 0? Me and my friend had an argument and I am in the favour of electric field not being 0. Do I win guys? Plz tell me I do
  2. jcsd
  3. Apr 7, 2017 #2
    If the lectric field is zero at a point, then we know the gradient of the potential is null at that point.
    If the potential is zero at a point, and this is the only information we have, we know nothing about the electric field
  4. Apr 7, 2017 #3


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    Potential is always relative to some other point. It's conventionally taken as referenced to 'Infinity'. It may be best to talk in terms of Potential Difference in this question.
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