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In the circuit shown, initially, there is no charge on capacitors and keys S1 and S2 are open. The values of the capacitors are C1 = 10 μF, C2 = 30 μF and C3 = C4 = 80 μF.

Which of the statement(s) is/are correct?
  • a)
    The keys S1 is kept closed for long time such that capacitors are fully charged. Now key S2 is closed, at this time, the instantaneous current across 30 Ω resistor (between points P and Q) will be 0.2 A (round off to 1st decimal place).
  • b)
    If key S1 is kept closed for long time such that capacitors are fully charged, the voltage difference between points P and Q will be 10 V.
  • c)
    At time t = 0, the key S1 is closed, the instantaneous current in the closed circuit will be 25 mA.
  • d)
    If key S1 is kept closed for long time such that capacitors are fully charged, the voltage across the capacitors C1 will be 4V.
Correct answer is option 'C,D'. Can you explain this answer?
Verified Answer
In the circuit shown, initially, there is no charge on capacitors and ...

(1) at t = 0, capacitor C1 acts as a battery of 4V, C4 & C3 of 1/2 V each, C2 is shorted Circuit is


(2) and (4)
At steady state,
When capacitor is fully charged it behave as open circuit and current through it zero.
Hence, Charge on each capacitor is same.

Now,


(3) At t = 0, S1 is closed, capacitor act as short circuit.
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In the circuit shown, initially, there is no charge on capacitors and keys S1 and S2 are open. The valuesof the capacitors areC1 = 10 μF, C2 = 30 μF and C3 = C4 = 80 μF.Which of the statement(s) is/are correct?a)The keys S1 is kept closed for long time such that capacitors are fully charged. Now key S2 is closed, at this time, the instantaneous current across 30 Ω resistor (between points P and Q) will be 0.2 A (round off to 1st decimal place).b)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage difference between points P and Q will be 10 V.c)At time t = 0, the key S1 is closed, the instantaneous current in the closed circuit will be 25 mA.d)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage across the capacitors C1 will be 4V.Correct answer is option 'C,D'. Can you explain this answer?
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In the circuit shown, initially, there is no charge on capacitors and keys S1 and S2 are open. The valuesof the capacitors areC1 = 10 μF, C2 = 30 μF and C3 = C4 = 80 μF.Which of the statement(s) is/are correct?a)The keys S1 is kept closed for long time such that capacitors are fully charged. Now key S2 is closed, at this time, the instantaneous current across 30 Ω resistor (between points P and Q) will be 0.2 A (round off to 1st decimal place).b)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage difference between points P and Q will be 10 V.c)At time t = 0, the key S1 is closed, the instantaneous current in the closed circuit will be 25 mA.d)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage across the capacitors C1 will be 4V.Correct answer is option 'C,D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about In the circuit shown, initially, there is no charge on capacitors and keys S1 and S2 are open. The valuesof the capacitors areC1 = 10 μF, C2 = 30 μF and C3 = C4 = 80 μF.Which of the statement(s) is/are correct?a)The keys S1 is kept closed for long time such that capacitors are fully charged. Now key S2 is closed, at this time, the instantaneous current across 30 Ω resistor (between points P and Q) will be 0.2 A (round off to 1st decimal place).b)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage difference between points P and Q will be 10 V.c)At time t = 0, the key S1 is closed, the instantaneous current in the closed circuit will be 25 mA.d)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage across the capacitors C1 will be 4V.Correct answer is option 'C,D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the circuit shown, initially, there is no charge on capacitors and keys S1 and S2 are open. The valuesof the capacitors areC1 = 10 μF, C2 = 30 μF and C3 = C4 = 80 μF.Which of the statement(s) is/are correct?a)The keys S1 is kept closed for long time such that capacitors are fully charged. Now key S2 is closed, at this time, the instantaneous current across 30 Ω resistor (between points P and Q) will be 0.2 A (round off to 1st decimal place).b)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage difference between points P and Q will be 10 V.c)At time t = 0, the key S1 is closed, the instantaneous current in the closed circuit will be 25 mA.d)If key S1 is kept closed for long time such that capacitors are fully charged, the voltage across the capacitors C1 will be 4V.Correct answer is option 'C,D'. Can you explain this answer?.
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