ISRO Electrical Engineering (EE) 2020 - Question 24

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The internal inductance of a straight wire of circular cross-section with radius r, length l and permeability µ is

  • A. (µ/2π) ln(r/l) H/m
  • B. µ/4π H/m
  • C. µ/8π H/m
  • D. None of the above

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