JAMB - Physics (1993 - No. 33)

Determine the inductive reactance when a 30.0mH inductor with a negligible resistance is connected to a 1.3 x 103Hz oscillator.
39.0\(\Omega\)
122.5\(\Omega\)
245.0\(\Omega\)
39000.0\(\Omega\)

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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