Electric circuit and capacitance

  • Thread starter oreo
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  • #1
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Does current pass when parallel plate capacitors are introduced in circuit?
 

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  • #2
berkeman
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Does current pass when parallel plate capacitors are introduced in circuit?

What are your thoughts? How does a capacitor behave for DC and AC voltages?
 
  • #3
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I think so that as the current is flow of charges but in this case the charges are being stored therefore current should not pass? Correct me if I am wrong.
 
  • #4
berkeman
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I think so that as the current is flow of charges but in this case the charges are being stored therefore current should not pass? Correct me if I am wrong.

The key is in my hint about AC versus DC excitation voltages. What sources have you been using for reading/learning about capacitors and electronics? What do they say about your question?
 
  • #5
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The key is in my hint about AC versus DC excitation voltages. What sources have you been using for reading/learning about capacitors and electronics? What do they say about your question?
It says that if the insulator between plates is perfect insulating material then no current passes and vice versa. If the source is DC, the current leakage would be low but if it is AC then there would be current displacement.
 
  • #6
berkeman
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Correct. So how does the impedance of a capacitor vary with AC frequency?
 

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