InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
A parallel- plate capacitor with plate area A and separation between the plates d, is charged by a constant current i. Consider a plane surface of area A/2 parallel to the plates and drawn summetrically between the plates. Find the displacement current through this area. |
|
Answer» Correct Answer - B `i_d = epsilon_0 (d phi_E)/(d t)` `=epsilon_0 (d)/(d t)(E A/2)` `=(epsilon_0 A)/2 (d)/(d t) (E)` `=(epsilon_0 A)/2 (d)/(d t)((sigma)/(epsilon_0))` `= (epsilon_0 A)/2 (d)/ (d t)((d)/(A epsilon_0))` `= 1/2 (d q)/(d t)` `i/2 (because (d q)/(d t)= i)`. |
|