Question

Find the energy stored by the capacitor 3F having a potential of 12V across it. (a) 432 (b) 108 (c) 216 (d) 54 I have been asked this question during a job interview. This key question is from Method of Images in chapter Electrostatic Boundary Value Problem of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

Answer 1

Right choice is (c) 216 Easiest explanation: The energy stored in a capacitor is given by, E = 0.5 CV^2. E = 0.5 x 3 x 12^2 = 0.5 x 432 = 216 units.