Capacitors 2 μF and 3 μF are charged to 150 V and 120 V respectively as shown. A discharged 1.5 μF capacitor is then connected across their free ends. Which statements are correct?
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Question

Capacitors 2 μF and 3 μF are charged to 150 V and 120 V respectively as shown. A discharged 1.5 μF capacitor is then connected across their free ends. Which statements are correct?

G1 Physics · Accepted Answer

Initial charges are 300 μC and 360 μC. After connecting the 1.5 μF capacitor, apply charge conservation at the two isolated nodes and common-potential relations. The final 1.5 μF charge is 180 μC, the 2 μF capacitor carries 120 μC, and charge through A is from right to left. Correct: A, B, C.