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Electromagnetic TheoryContinuity Equation

For steady current conditions, the continuity equation reduces to?

  • A∇·J = 0
  • B∇×J = 0 always
  • CJ = 0
  • D∇·D = 0 in every conductor
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Correct Answer: A. ∇·J = 0
Explanation: Under steady conditions charge density does not change with time, so ∇·J=0.
Reference: Standard electromagnetic theory: continuity equation
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