Voltage across a Capacitor

Discussion in 'Homework Help' started by CircuitNube, Sep 22, 2011.

  1. CircuitNube

    Thread Starter New Member

    Sep 22, 2011
    1
    0
    Say I have a capacitor in series with a resistor, and those components are in parallel with a resistor. This circuit is being charged by a current source. The circuit has been connected and on for a long time, so the capacitor is charged. How can I find the voltage across that capacitor? Here is a crude drawing to clarify, Is=Current Source, RΩ=Resistor, C=capacitor.


    _________________
    l l l
    RΩ Is
    l l l
    l l C
    l l l
     
  2. Hi-Z

    Active Member

    Jul 31, 2011
    158
    17
    If the circuit has settled, then the capacitor is not playing any further part, and could be removed from the circuit. I'm not sure I understand the diagram, but, reading the words, it sounds as though everything is now at a potential equal to IR (where R is the parallel resistor). So the capacitor will be charged to this value.
     
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