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Charges electrical point

  1. May 7, 2004 #1
    Two point charges with the values of 3.4 microC and 6.6 microC are separated by 0.10 m. What is the electrical potential at the pont midway between the two point charges? (kc= 8.99 x 10^9 Nm^2/C^2)
    Please help me out!
     
  2. jcsd
  3. May 7, 2004 #2

    Doc Al

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    Staff: Mentor

    electric potential

    The potential at a distance "r" from a point charge of Q is given by:
    [tex]V = \frac{kQ}{r}[/tex]
     
  4. May 9, 2004 #3

    V= -kQ/r i just added a negative sign to it to make it more sophesticated
     
  5. May 9, 2004 #4

    Doc Al

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    sophisticated but wrong :-)

    The minus sign is incorrect. The potential increases as you get closer to a positive charge. (The zero potential is taken to be at r = ∞.)
     
  6. May 9, 2004 #5
    He might of been thinking about E= -dv/dx... kinda like F= -dU/dx...
     
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