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  • Explain why current flows through an ideal capacitor when it is connected to an a.c. source but not when it is connected to a d.c. source in a steady state.       <di

Explain why current flows through an ideal capacitor when it is connected to an a.c. source but not when it is connected to a d.c. source in a steady state.

 

 

 

 
 
 
 
 

Answers (1)

X_{c}=\frac{1}{2\pi fc}

X_{c}\rightarrow Capacitive reactance

f\rightarrow frequency

For DC\; f=o

\therefore X_{c}= \infty

So the capacitor does not allow current flow when connected to dc in steady-state and allows current flow when connected to AC.

Or

For ac or source circuit is complete due to the presence of displacement current for steady-state, for dc source there is no displacement current, so the circuit is incomplete.

Posted by

Safeer PP

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