Find the time constant for the given RC circuits in correct order (in `mus`) `R_(1)=1Omega,R_(2)=2Omega,C_(1)=4muF,C_(2)=2muF`A. `18,4,(8)/(9)`B. `18,(8)/(9),4`C. `4,18,(8)/(9)`D. `4,(8)/(9),18`

Find the time constant for the given RC circuits in correct order (in

1.	Find the time constant for the given RC circuits in correct order (in `mus`) `R_(1)=1Omega,R_(2)=2Omega,C_(1)=4muF,C_(2)=2muF`A. `18,4,(8)/(9)`B. `18,(8)/(9),4`C. `4,18,(8)/(9)`D. `4,(8)/(9),18`
Answer» Correct Answer - B `tau=CR` `tau_(1)=(C_(1)+C_(2))(R_(1)+R_(2))=18mus` `tau_(2)=((C_(1)C_(2))/(C_(1)+C_(2)))(R_(1)R_(2))/(R_(1)+R_(2))=(8)/(6)xx(2)/(3)=(8)/(9)mus` `tau_(3)=(C_(1)+C_(2))((R_(1)R_(2))/(R_(1)+R_(2)))=(6)((2)/(3))=4mus`

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