LCD's - uniform electric field

  1. I have attached the question, and the answer. I dont understand the answer given.
     

    Attached Files:

    • 181.doc
      181.doc
      File size:
      29.5 KB
      Views:
      11
  2. jcsd
  3. berkeman

    Staff: Mentor

    I agree that the answer is a bit obtuse, but do you understand how there is a torque on an electric dipole in an E-field? You can draw the F=qE force vectors if that helps...
     
  4. It is an uniform electric field, but the forces are not collinear... Why is this?
     
  5. berkeman

    Staff: Mentor

    The forces are parallel when the dipole is sideways to the field, and colinear after the dipole aligns with the field. Can you draw the forces on a dipole, and describe what those forces will do to the dipole?
     
Know someone interested in this topic? Share a link to this question via email, Google+, Twitter, or Facebook
Similar discussions for: LCD's - uniform electric field
Loading...