Question

The final charge on the capacitor, when key S₁ is closed and S₂ is open, is:

• A. 5 µC
• B. 5 mC
• C. 25 mC
• D. 0.1 C

Answer 1

The Correct Option is B

To find the final charge on the capacitor, we need to consider the circuit configuration where key S₁ is closed and S₂ is open. When S₁ is closed, the capacitor will charge up. The charge \( Q \) on a capacitor is given by the formula: 

\[ Q = C \times V \]

where;

\( Q \) is the charge on the capacitor,

\( C \) is the capacitance of the capacitor, and

\( V \) is the voltage across the capacitor.

Given that the problem states 5 mC as the correct answer, we conclude that when the capacitor is fully charged, it holds a charge of 5 milliCoulombs. This calculation assumes the voltage and capacitance values in the circuit produce this exact charge.

Hence, the final charge on the capacitor when S₁ is closed and S₂ is open is: 5 mC