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Electromagnetic TheoryContinuity Equation

The general differential form of the charge continuity equation is?

  • A∇·J = -partial rho_v/partial t
  • B∇×J = -partial rho_v/partial t
  • C∇·J = rho_v
  • D∇×E = J
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Correct Answer: A. ∇·J = -partial rho_v/partial t
Explanation: Charge conservation is expressed locally by ∇·J=-∂ρv/∂t.
Reference: Standard electromagnetic theory: continuity equation
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