An electrical circuit is shown in the given figure. The resistance of each voltmeter is infinite and ech ammeter is `100Omega`. The charge on the cpacitor of `100muF` in steady staste is `4mC`. Chose correct statement(s) regarding the given circuit.

Options

A. Reading of voltmeter `V_2 is 16`
B. Reading of ammeter `A_1` is zero and `A_2` is `1/25A`
C. Reading of voltmeter `V_1` is `40 V`
D. Emf of the ideal cell is `66 V`

Answer

B, C, D

Explanation

In steady state current through capacitor wire is zero. Current flows `200Omega, 900Omega` and `A_2`.
`V_C=q/C=(4xx10^-3)/(100xx10^-6)`
`=40V`
This is also potential drop across `900Omega` resistance and `100Omega` ammeter `A_2` (Total resistance `=1000Omega`). Now, this `1000Omega` and `200Omega` are in series. Therfore,
`V_2=V_(200Omega)=V_(1000Omega)/5`
`40/5=8V`
`Emf=V_(1000Omega)+V_(200Omega)=48V`
`i=("Emf")/("Net resistance")`
`=48/1200=1/25A`