The electric field strength in the capacitor shown in circuit below in steady state is E = 50V/cm. The distance between the· plates of the capacitor C is 0.5 mm, square plates are of area `100 cm^(2)`, the resistance `R = 50 Omega`. and the internal resistance of battery is `r=0.1 Omega`

Options

A. the emf of the battery is 2.55 V
B. the attractive force between the plates is `2.2 xx 10^(-4)N` (approx)
C. the charge on the plants is `42.25 xx 10^(-10)C`
D. the current through the battery in steady state is 0.5 A