1. The problem statement, all variables and given/known data A dielectric equilateral triangle of dielectric constant 30 is inserted into uniform horizontal electric field of 100,000 N/C. What is the potential difference between two points 3 cm apart on one of the sides? 2. Relevant equations ΔV =∫E⋅dl E' =E/κ 3. The attempt at a solution The electric field in the triangle is E/κ but I'm not sure along what path to integrate to find the potential difference.