What is the current I(3τ), that is, the current after three time constants have passed? The current in the circuit will approach a constant value Ic after a long time (as t tends to infinity). What is Ic?

Complete Question

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a

b

c

Explanation:

From the question we are told that

From the question we are told to find when t=0  equals the time constant ()

That is to obtain .This  is mathematically represented as

             Substituting 12 V for and 150Ω for R

From the question we are told to find when t=0  equals the 3 times the  time constant ()

That is to obtain .This  is mathematically represented as

As tends to infinity

So would be mathematically evaluated as

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