In the shown circuit, capacitors are initially uncharged and switches S₁ and S₂ are open. C₁ = 10 µF, C₂ = 30 µF and C₃ = C₄ = 80 µF. Select the correct statements.

Select all that apply

• Option A

  S₁ is kept closed for a long time so the capacitors are fully charged. If S₂ is then closed, the instantaneous current through the 30 Ω resistor between P and Q is 0.2 A.

• Option B

  If S₁ is kept closed for a long time, the potential difference between P and Q is 10 V.

• Option C

  At t = 0, when S₁ is closed, the instantaneous current in the closed circuit is 25 mA.

• Option D

  If S₁ is kept closed for a long time, the voltage across C₁ is 4 V.