Question

In the circuit shown in figure, the ratio of charges on $5\mu F$ and $4\mu F$ capacitor is:

• A. $4/5$
• B. $3/5$
• C. $3/8$
• D. $1/2$

Answer 1

The correct option is C $3/8$

Potential difference across $5\mu F$, V1 = $\frac{3}{10}\ast 6$ =1.8 V

Q1 = charge at $5\mu F$ = C *V1 = 5 *1.8 = 9$\mu C$

Similarly,

Potential difference across $\mu F$ , V2 = 6 V

Q2 =charge at $4\mu F$ = 4* 6 =$24\mu F$

Q1/Q2 =9/24 =3/8