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A series R - L - C circuit is shown in the diagram above. Which...

Physics
WAEC 2025

A series R - L - C circuit is shown in the diagram above. Which of the following vector diagrams correctly represents the phase relationship among I, V, V\(_F\), V\(_C\), and V\(_L\), if V\(_C\) is greater than V\(_L\) and the symbols have their usual meaning?

  • A. A
  • B. B
  • C. C
  • D. D
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Correct Answer: Option A
Explanation

i.e V\(_L\) - V\(_C\) = -ve (V\(_C\) - V\(_L\) = +ve)

From Tan \(\phi\) = \(\frac{V_L - V_C}{\text{R}}\)

It shows that V\(_L\) - V\(_C\) will be inverted on the y-axis V\(_C\) > V\(_L\)


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