Question

Calculate the capacitance of a material in air with area 20 units and distance between plates is 5m. (a) 35.36pF (b) 3.536pF (c) 35.36nF (d) 3.536nF The question was posed to me during an internship interview. Question is from Real Time Applications in division Electrostatic Fields 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 option is (a) 35.36pF To elaborate: The capacitance of any material is given by, C = εA/d, where ε = εoεr is the permittivity in air and the material respectively. Thus C = 1 X 8.854 X 10^-12 X 20/5 = 35.36pF.