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In the circuit shown in the figure four ...

In the circuit shown in the figure four capacitors are connected to a battery. The `p.d` across the `7 mu F` capacitor is `6V`.
.

A

The p.d across the `12 mu F` capacitor is `10 V`

B

The charge on the `3 mu F` capacitor is `42 mu C`

C

The p.d across `3.9 mu F` capacitor is `10 V`

D

The emf of the battery is `30 V`

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
`q-[3.9 +(7 xx3)/(7+3)] xx[6+(7 xx6)/(3)]=120 muC`
p.d across `12 muF` capacitor `= (120)/(12)=10 V(A)`
Charge on `3 mu F` capacitor `= 7 xx 6 =42 muC (B)` p.d across
`3.9 mu F` capacitor `= 6+((7xx6)/(3))=20 V`
The emf of the battery `=20+10=30 V(D)`.
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