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Homework Help: Finding magnitude and direction of net torque on a dipole

  1. Jan 17, 2013 #1
    1. The problem statement, all variables and given/known data

    For the dipole shown, the charges are ± 3.0 micro coulombs separated by a distance of 3.20 nm and oriented so that the theta is 35.0 degrees. If the electric field has a magnitude of 8000 N/C, find the magnitude and direction (clockwise/counterclockwise) of the net torque on the dipole about the same axis as before.

    2. Relevant equations

    F = qE
    torque = Fl

    3. The attempt at a solution

    first i solved for F = (3.0E-6 C)(8000N/C) = 2.4E-2 N

    then solved for l = (3.20nm)(sin35) = 1.84E-9

    net torque = 2 * F * l ???????

    Attached Files:

  2. jcsd
  3. Jan 17, 2013 #2
    NVM i solved it....

    T = Fl
    T = qEl
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