⚛️ Physics · Electrostatic Potential and Capacitance · NEET & JEE

A 4 μF capacitor charged to 100 V is connected in parallel to an identical uncharged 4 μF capacitor. The common final voltage is:

Answer: 50 V.

A 25 V
B 50 V
C 100 V
D 200 V

Correct answer: B. 50 V

Explanation: Charge is shared: V = Q/(C₁ + C₂) = 400 μC/8 μF = 50 V.

Radial electric field lines and concentric red equipotential lines around a point charge (an electron), with field lines pointing inward

Field lines (radial) and equipotential lines (concentric circles) of a point charge. Equipotential surfaces are always perpendicular to the field lines. Image: Sjlegg, Public Domain, via Wikimedia Commons.

Concept context

Electric potential, equipotential surfaces, potential energy of charge systems, conductors, dielectrics, capacitors, combinations, and energy storage.

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A 4 μF capacitor charged to 100 V is connected in parallel to an identical uncharged 4 μF capacitor. The common final voltage is:

Concept context

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