Question: ( Difficulty: * * ) In the circuit shown below the switch has been open for a long time and there is no charge on

(Difficulty: **)
In the circuit shown below the switch has been open for a long time and there is no charge on the capacitor.
Assume R1=2,R2=4,C=2F.
a) The switch S is now closed. Find all the currents just after the switch is closed.
b) Find all the currents after the switch has been closed for a very long time.
c) After the switch has been closed for a very long time it is reopened. Calculate an equation for the
current i2(t) passing through R2 as a function of time. What is the direction of the current ?
(Difficulty: **) In the circuit shown below the switch has been

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