ETC EngineeringMCQs
Home › Electromagnetic Theory › The conduction current density J in an isotropic conductor is related to electric field E by?
MCQ Practice Question
Electromagnetic TheoryCurrent Density

The conduction current density J in an isotropic conductor is related to electric field E by?

  • AJ = sigma E
  • BJ = epsilon E
  • CJ = mu E
  • DJ = E/sigma²
Report an error
Correct Answer: A. J = sigma E
Explanation: Point-form Ohm's law is J=σE, where σ is conductivity.
Reference: Standard electromagnetic theory: current density
Continue practicing: Electromagnetic Theory MCQs or browse all MCQs.