Parallel combination of two condensers of capacities `2muF and 4muF` and the series combination of two condensers of capacities `6muF and 12muF` are connected in series. The equivalent capacity of entire combination is

Options

A. `4.4muF`
B. `2.2muF`
C. `2.4muF`
D. `1.4muF`

Answer

C

Explanation

`C_(P)=2+4=6muF`
`C_(S)=(6xx12)/(6+12)=72/18=4muF`
`C=(C_(p)*C_(S))/(C_(P)+C_(S))=(6xx4)/(6+4)=24/10=2.4muF.`