In the circuit shown, initially there is no charge on capacitors and keys S 1 and S 2 are…

Physics · JEE Advanced · NTA Exams — Electrostatics

In the circuit shown, initially there is no charge on capacitors and keys S₁ and S₂ are open. The values of the capacitors are C₁ = 10 μF, C₂ = 30 μF, C₃ = C₄ = 80 μF. Which statements is/are correct?

1. The key S₁ is kept closed for long time such that capacitors are fully charged. Now key S₂ is closed, at this time, the instantaneous current across 30 W
   resistor (between points P and Q) will be 0.2 A (round off to 1^st decimal place).
2. If key S₁ is kept closed for long time such that capacitors are fully charged, the voltage across capacitor C₁ will be 4 V.
3. At time t = 0, the key S₁ is closed, the instantaneous current in the closed circuit will be 25 mA.
4. If S₁ is kept closed for long time such that capacitors are fully charged, the voltage difference between P and Q will be 10 V.