For the circuit shown in the Figure, if R1 = 9 ?, R2 = 6 ? and C = 0.8 F, and if $i = A + Be^{-t/?}$, answer the following two questions
For $i = A + Be^{-t/?}$, the value of B is
Oa. -1.022 A
Ob. -1.278 A
Oc. -1.597 A
Od. -0.818 A
For $i = A + Be^{-t/?}$, the value of ? is
Oa. 1.475 s
Ob. 2.304 s
Oc. 2.88 s
Od. 1.843 s