Question on: WAEC Physics - 1991
If the frequency of the e.m.f. source in the a.c. circuit illustrated above is (\frac{500}{\pi})Hz. What is the reactance of the inductor?
A
450
B
0.9
C
900
D
567
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Correct Option: C
x = 2(\pi f L = 2\pi \times \frac{500}{\pi} \times 0.9)
= 900(\Omega)
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