PhysicsJEE Main 6 Apr 2026, Shift 2·Q15·MCQ·Easy–moderate

Electric Potential and Capacitance · Capacitance

A sphere of capacitance 100 pF is charged to a potential of 100 V. Another identical uncharged metal sphere is brought in contact with the charged sphere, then the change in the total energy stored on these spheres, when they touch is

\alpha\times10^{-7}

J. The value of

\alpha

is . (combined capacitance of spheres is 200 pF).

(1)5
(2) $\dfrac52$
(3) $\dfrac72$
(4) $\dfrac92$

We corrected a printing error in the original paper

Source printed “Another identical undercharged metal sphere”.

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Electric Potential and Capacitance · Capacitance

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