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Linear Charge Density (Question on the problem)

  1. Aug 26, 2009 #1
    1. The problem statement, all variables and given/known data

    A charge of -310e is uniformly distributed along a circular arc of radius 4.15 cm, which subtends an angle of 43°. What is the linear charge density along the arc in C/m?

    2. Relevant equations

    Density = Charge/length

    3. The attempt at a solution

    Charge = -310(1.6E-19) = -4.96E-17 C

    Length = ??

    This is because I don't know what "subtends an angle of 43" means. Does it mean the circular arc is 43/360 degrees of a circle?
     
  2. jcsd
  3. Aug 26, 2009 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Yes, that's exactly what it means.
     
  4. Aug 26, 2009 #3
    Okay, thanks!
     
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