Q. Find the charge on the capacitor shown in figure.
(a) 3 μC
(b) 2 μC
(c) 4 μC
(d) 1.5 μC
Ans: (c)
Sol: Current drawn from the battery is I = V/R = 2/30 A .
Potential drop across 10 ohm = 2/30 × 10 = 2/3 volt = P.D across capacitor
Charge on capacitor = 6×2/3 = 4 μC