Question

A capacitor of capacitance 2 μF is charged with the help of a 60 V battery. After disconnecting the battery, if this capacitor is connected in parallel with another uncharged capacitor of capacitance 1 μF, then the potential difference across the plates of the 2 μF capacitor is

• A. 30 V
• B. 60 V
• C. 40 V
• D. 20 V

Hint:

When capacitors are connected in parallel, the voltage across each capacitor is the same, but the charge is divided based on their capacitances.

Answer 1

The Correct Option is C

When the 2 μF capacitor is connected in parallel with the 1 μF uncharged capacitor, the total charge is conserved. Using the formula for capacitors in parallel, the final voltage across both capacitors is determined to be 40 V. This is because the voltage in a parallel configuration remains the same across both capacitors.