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| Q. |
Why does capacitor block dc signal at steady state? |
| A. | due to high frequency of dc signal |
| B. | due to zero frequency of dc signal |
| C. | capacitor doesnot pass any current at steady state |
| D. | due to zero frequency of dc signal |
| Answer» D. due to zero frequency of dc signal | |
| Explanation: frequency of dc signal is zero. so, capacitive reactance xc=1/2πfc becomes infinite and capacitor behaves as open circuit for dc signal. hence, capacitor block dc signal. | |
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