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Finding the electric and magnetic fields from a scalar potential?

  1. Jun 20, 2014 #1
    E = - grad*phi - 1/c (dA/dt).
    phi is the scalar potential, and is given. How do I calculate the vector potential = A ?
    Is it A = (v/c) * phi ? If it is, then where is this equation coming from?
    Thank you.
     
  2. jcsd
  3. Jun 20, 2014 #2

    jtbell

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    Staff: Mentor

  4. Jun 21, 2014 #3

    BruceW

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    Homework Helper

    yeah, in any case, it is not possible to calculate the vector potential by only using the scalar potential and nothing else.
     
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