In the Provided that circuit, , , , , , . The charge stored on capacitor is _____ .
JEE Physics 2023 Question with Solution
Answer
Correct answer:4
Step-by-step solution
Standard Method
Given: The solution states that the total equivalent capacitance is and the applied voltage is .
Find: The charge stored on capacitor .
Using the equivalent capacitance, the total charge in the circuit is
Substituting the values given in the solution:
Now use the charge division relation quoted in the solution for the relevant branch:
The solution substitutes:
So,
Therefore, the charge stored on capacitor is . Hence the numerical answer is 4.
Note: The extracted solution contains an internal inconsistency because the question states , while the working uses in the charge division step. However, the solution concludes the final value as , and that is taken as the answer.
Common mistakes
Using the given capacitor values directly in a random series-parallel reduction without identifying the branch for charge division is incorrect. First determine the equivalent charge flow in the circuit, then apply the branch relation used in the solution.
Confusing capacitance with charge is incorrect because depends on both capacitance and potential difference. A capacitor with larger capacitance does not automatically have the same charge unless the voltage condition is also known.
Ignoring inconsistencies in the extracted working can lead to a wrong result. Here the solution uses although the question states , so the final answer must be taken from the concluded solution value rather than mixing both datasets.
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