Determine the charge on the capacitor in the following circuit:

Options

A. `200muC`
B. `60muC`
C. `2muC`
D. `10muC`

Answer

A

Explanation

`E_(eq)=6+(12xx4)/(12+4)=9Omega therefore i_("main")=(72)/(9)=8` amp
`therfore i_(10Omega)=(4)/(12+4)xx8=2amp.` `therefore Q=CV=10xx10^(-6)xx(10xx2)=200muC`.