Question

Which of the following graphs represents the correct variation of capacitive reactance $X_c$ with frequency $\upsilon$ ?

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

Capacitive reactance,
$X_C=\frac{1}{\omega C}$
$=\frac{1}{2\pi \upsilon C}$
$\Rightarrow X_C\propto \frac{1}{\upsilon }$
With increase in frequency, $X_c$ decreases.
Hence, represents the correct graph.