Question

Question 22. Two identical capacitors are charged to different potentials, then they are connected to each other in such a way such that the sum of charges of plates having positive polarity, remains constant. Mark the correct statement(s). (a) Sum of charges of plates having negative polarity remains constant. (b) Mean of individual final potentials is different from mean of individual initial potentials. (c) Total energy stored in two capacitors in final state may be equal to that in initial state. (d) Heat dissipation in the circuit can be zero.

Answer 1

Answer:

When the two capacitors charged to same potential are connected in series, then total potential difference V

′

=V

1

+V

2

=V+V=2V

solution

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Answer 2

Answer:

The right option is A

(a) Sum of charges of plates having negative polarity remains constant.

Explanation:

The total charge of plates with a negative polarity remains constant because the charge of an isolated system remains conserved. Due to the differing potentials of the two capacitors, some charge enters the circuit until both capacitors reach the same potential. Suppose V is the final common potential

V = C1V1 + C2V2 ÷ (C1+C2) that is equal to V1+V2

as (C1=C2=C)