Question:
The capacitive reactance of a capacitor connected to 50 V d.c. is
The capacitive reactance of a capacitor connected to 50 V d.c. is
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Capacitive reactance depends on frequency, and direct current has zero frequency.
Updated On: Nov 13, 2026
zero.
\(10\Omega\).
\(50\Omega\).
infinity.
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Capacitive reactance is \(X_C=\dfrac{1}{2\pi fC}\).
Step 2: DC Supply
For a d.c. source the frequency is \(f=0\).
Step 3: Calculation
\(X_C=\dfrac{1}{2\pi\times 0\times C}\rightarrow\infty\).
A capacitor blocks steady d.c. once it is charged.
Step 4: Compare the options
Infinite reactance matches option (D).
Final Answer:
The capacitive reactance for d.c. is infinite. \[ \boxed{\text{(D) }\text{infinity.}} \]
Capacitive reactance is \(X_C=\dfrac{1}{2\pi fC}\).
Step 2: DC Supply
For a d.c. source the frequency is \(f=0\).
Step 3: Calculation
\(X_C=\dfrac{1}{2\pi\times 0\times C}\rightarrow\infty\).
A capacitor blocks steady d.c. once it is charged.
Step 4: Compare the options
Infinite reactance matches option (D).
Final Answer:
The capacitive reactance for d.c. is infinite. \[ \boxed{\text{(D) }\text{infinity.}} \]
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