Question

Asked Apr 1, 2019

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Step 1

**STEP BY STEP METHOD:**

From the circuit, write the expression for *i _{o}*(

Step 2

Here,

*i _{o}*(∞) is the current through the required branch (6 kilo ohms branch) at final state,

*i _{o}*(0

*τ *is the time constant for *t* >0.

From the given circuit, the switch opens at *t* =0. That is, switch is in closed condition before *t* =0. The inductor gets short circuited as the switch was closed for a long time. Therefore, redraw the circuit for *t* =0^{-} as shown in Figure 1 and find the value of current through the inductor for *t* =0^{-}.

Step 3

From Figure, it is clear that, the current in the circuit flows only through the short circuit path of ind...

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