1.

() for > 0 is given by

Answer» The time constant t is given by As Req = 4 || 4 = 2 Ω ∴ i1(t) = iF - (iF - i1)e-t/t ifinal = = 2.5 A ∴ i1(t) = 2.5 - (2.5 - 1.25)e-t/1/2 i1(t) = 2.5 - 1.25e-2t.


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