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The value of parameters of the circuit shown in the figure are :
For time 
, the circuit is at steady state with the switch ' 
' in closed condition. If the switch is opened at 
, the value of the voltage across the inductor 
at 
in Volts is ________ (Round off to 1 decimal place).
Since the switch was closed for a long time before t = 0 circuit is in steady state at 
∴ L is short circuited & C is open circuited
At t = 0+ S is opened & inductor is replaced by a current source & capacitor is replaced by a voltage source.
By KCL, current in capacitor branch = 4A
By KVL, 6R1 + VL = 4R2 + 12
VL = 4 × 2 – 6 × 2 + 12 = 8 volt