Physics
WAEC 2025
Calculate the inductance L of the COIL in the circuit shown above
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A.
3.8 H
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B.
0.4 H
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C.
0.6 H
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D.
14.4 H
Correct Answer: Option C
Explanation
V = I X\(_L\)
X\(_L\) = \(\frac{\text{V }}{\text{I}}\) = \(\frac{240}{2}\) = 120 Ω
But X\(_L\) = 2\(\pi\)fL
120 = 2 x 2\(\pi\) x \(\frac{100}{\pi}\) x L
120 = 2 x 100 x L = 200L
L = \(\frac{120}{200}\) = 0.6H
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