Question

Find the resistivity of a material having resistance 20kohm, area 2 units and length of 12m. (a) 6666.6 (b) 3333.3 (c) 1200 (d) 2000 This question was addressed to me by my college professor while I was bunking the class. This key question is from Resistances and Capacitances topic 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

Correct answer is (b) 3333.3 To elaborate: The resistance of a material is given by R = ρL/A. To get ρ, put R = 20 x 10^3, A = 2 and L = 12. We get ρ = 3333.3 units.