Engineering Commutation process in RLC circuit

AI Thread Summary
The discussion focuses on solving a problem related to the commutation process in an RLC circuit, specifically finding the current flowing through E1 after E2 is connected. The user is struggling with the equations at time t=0 and is seeking assistance in formulating the correct relationships. Key equations mentioned include the derivative of voltage across the capacitor and the relationships between currents and voltages in the circuit. The user has attempted to set up the equations but feels they are missing critical information. Clarification on the initial conditions and circuit behavior at t=0 is needed to proceed with the solution.
karlis123
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Homework Statement



Still can't figure this one out.
All data is on the picture attached.
I have to find the current flowing through E1 after E2 is connected and draw a graph as it changes in time of the process.

I can't do the equations when t=0

Homework Equations


dUc/dt|t=0 =i3(0)/C


The Attempt at a Solution



t=0
i2-i5=i3+i6
L*di2/dt +Uc-R2*i6+r1*i5=E2
Uc-R1*i5=E1-E2
i still miss something, any help would be apritiated
 

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here I have found an example with the equations when t=0
 

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