For the arrangement shown in figure identify the correct statement.

Options

A. The charge on the `12 muF` capacitor is zero.
B. The charge on the `12muf ` capacitor is `30muC`.
C. The charge on the `4muF` capacitor is `30muC`
D. none of these

Answer

A

Explanation

The potetial of point B is `+10V`, therefore no potential difference exists across `12muF` capacitor hence, `q_(12)=0` charge on the `4muF` capacitor is `q_(4)=(4)(10)=40muC`.