Find the `p.d` between points `A` and `B` of ararngement shown in Fig

Answer

`-8 V`

Explanation

Here, `C_(1) = 2 muF,
C_(2) = 4 muF, E_(1) = 12 V, E_(2) = 24 V`
`(1)/(C_(s)) = (1)/(C_(1)) + (1)/(C_(2)) = (1)/(2) + (1)/(4) = (3)/(4) muF`
`q = C_(s) (E_(1) - E_(2)) = (4)/(3) (12-24) = - (16)/(2) = -8V`