Find the transient current in this circuit

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Homework Help Overview

The discussion revolves around analyzing a circuit involving a capacitor and resistors, specifically focusing on the transient currents (I1, I2, I3) immediately after a switch is closed and opened, as well as after a sufficient amount of time has passed. Participants are exploring the behavior of the capacitor in different states of charge and its impact on the circuit's current.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the behavior of the capacitor as a short circuit when closed and as an open circuit when fully charged. Questions arise about the implications of these states on the currents I1, I2, and I3, particularly whether I3 is zero and how the voltages across the capacitor and resistor relate at different times.

Discussion Status

The discussion is ongoing, with participants providing insights into the behavior of the capacitor and its relationship with the resistors. Some guidance has been offered regarding the instantaneous behavior of the capacitor and its effect on the circuit, but no consensus has been reached on the specific values of the currents.

Contextual Notes

Participants are working under the constraints of a homework assignment, which may limit the depth of their exploration. There is a focus on understanding the fundamental principles of circuit behavior rather than deriving complete solutions.

  • #31
Helly123 said:
Maybe you mean the bottow is positive, so current go from bottom (+) to upper (-) , counterclockwise
No, the top plate of the capacitor is connected to the positive terminal of the battery according to your diagram. So the top plate is at higher potential than the bottom plate. Current flows in the direction of I2 in your drawing and opposite to I3.
 
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  • #32
kuruman said:
No, the top plate of the capacitor is connected to the positive terminal of the battery according to your diagram. So the top plate is at higher potential than the bottom plate. Current flows in the direction of I2 in your drawing and opposite to I3.
Ok. Thanks sir. You save me
 

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