Multiple choice

Which of the following is the electric field intensity at the point where the energy density at the point in a medium of dielectric constant 8 is 26.55 x 106J/m3?

  1. 0.37 x 1018 N/C

  2. 0.611 x 109 N/C

  3. 1.15x 10-9 N/C

  4. 0.866 x 109 N/C

  5. 0.75 x 1018 N/C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

U = 26.55 x 10-6J/m3; K = 8; E = ? if U = ½ K ε0 E2 E2 = 2 U/K ε0 = 2 x 26.55 x 106/8 x 8.85 x 10-12 , E2 = 0.75 x 1018 E = 0.866 x 109 N/C

Keep practicing — related questions