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Determine the inductive reactance when a 30.0mH inductor with a negligible resistance is connected to...

Physics
JAMB 1993

Determine the inductive reactance when a 30.0mH inductor with a negligible resistance is connected to a 1.3 x 103Hz oscillator.
  • A. 39.0\(\Omega\)
  • B. 122.5\(\Omega\)
  • C. 245.0\(\Omega\)
  • D. 39000.0\(\Omega\)
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Correct Answer: Option C
Explanation
XL = 2\(\pi\)FL

= 2 x 3.142 x 30 x 10-3 x 1.3 x 103

= 245\(\Omega\)

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