wats d case of V when C conn. in parallel???

is it same fro the whole sys.??? i

if same, how can we cal .it???

let v be the final pd across the combination,

900-400 = 3v+2v

v=100 volt.

so final charge on 3uF cap = 300 uC, &on 2uF=200uC

so, total charge passed = 900-300 = 600uC

see the charge is conserved in this case

let the initial charges be q1 and q2 and final charges be Q1 andQ2

in parallel the potential across both is same

therefore, q1+q2=Q1+Q2

or, c1.v1+c2.v2=c1.v+c2.v    where v is the final potential

from here we get v=(c1.v1+c2.v2)/(c1+c2)

now Q1=c1.v=c1*(c1.v1+c2.v2)/(c1+c2)

and q1=c1.v1

charge flown=|q1-Q1|

substitute the values and get ur answer