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Find the time constant for the given RC ...


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, 8//9, 4`

B

`18, 4, 8//9`

C

`4, 8//9, 18`

D

`8//9, 18,4`

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The correct Answer is:
D
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