Comprehension \( \quad \) In the circuit shown below, the switch \( S \) is connected to positio...

Comprehension \( \quad \) In the circuit shown below, the switch \( S \) is connected to position \( P \) for a long time so that the charge on the capacitor becomes \( q_{1} \mu C \). Then \( S \) is switched to position \( O \). After a long time, the charge on the capacitor is \( q_{2} \mu \mathrm{C} \).
The magnitude of \( q_{2} \) is