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Question
What is the reactance of a capacitor connected to a constant DC source?
Solution
The reactance of a capacitor is given by,
`X_c = 1/{wc}`
For a DC source, ω = 0
⇒ `X_c = 1/(0xxc) = ∞ `
So, for a constant DC source, reactance of a capacitor is infinite.
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