Free physics question bank
Capacitor questions with solutions
Practice Capacitor for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–10 of 64 questions
- MCQmediumCapacitor
In the circuit shown in the figure, a 2 μF capacitor is in a branch with a 4 Ω resistor, while the other branches contain a 2 Ω resistor and a 2 V source in series with a 6 Ω resistor. After steady state is reached, what is the potential difference across the capacitor?
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JEE Mains 2026 5 April Evening Shift
Open question & full solution → - IntegermediumCapacitor
In the resistor-capacitor network shown in the source figure, the battery emf is 12 V and the capacitor is 100 μF. After steady state is reached, what charge is stored on the capacitor, in μC?
JEE Mains 2026 8 April Evening Shift
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Two identical capacitors have the same capacitance C. One is charged to potential V and the other to potential 2V. Their negative ends are connected together. When the positive ends are also joined together, the decrease in energy of the combined system is:
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JEE Mains 2024 01 Feb Morning Shift
Open question & full solution → - NumericmediumCapacitor
A capacitor of capacitance C and potential V has energy E. It is connected to another capacitor of capacitance 2 C and potential 2V. Then the loss of energy is (x/3)E, where x is _____ .
JEE Mains 2024 30 Jan Morning Shift
Open question & full solution → - NumericeasyCapacitor
A parallel plate capacitor with air between the plate has a capacitance of 15pF. The separation between the plate becomes twice and the space between them is filled with a medium of dielectric constant 3.5. Then the capacitance becomes x/4 pF. The value of x is __________.
JEE Mains24 January 2023Shift 2Evening Shift
Open question & full solution → - MCQmediumCapacitor
A galvanometer G of 2 Ω resistance is connected in the given circuit. The ratio of charge stored in C₁ and C₂ is:
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JEE Mains 2024 01 Feb Evening Shift
Open question & full solution → - NumericmediumCapacitor
Three capacitors of capacitances 25 μF, 30 μF and 45 μF are connected in parallel to a supply of 100 V. Energy stored in the above combination is E. When these capacitors are connected in series to the same supply, the stored energy is 9E/x. The value of x is ______.
JEE Mains 2024 05 Apr Morning Shift
Open question & full solution → - NumericmediumCapacitor
In an electrical circuit drawn below the amount of charge stored in the capacitor is ____ μC.
JEE Mains 2024 01 Feb Evening Shift
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Three capacitors C₁ = C₂ = C₃ = 5 μF are connected as shown in the original figure. The space between the plates of C₁ is filled with a dielectric of dielectric constant K = 4. The effective capacitance between A and B is:
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JEE Mains 2025 4 April Evening Shift
Open question & full solution → - NumericmediumCapacitor
A parallel plate capacitor with plate separation 5 mm is charged by a battery. On introducing a dielectric sheet of thickness 2 mm, while keeping the battery connected, the capacitor draws 25% more charge from the battery than before. The dielectric constant of the sheet is ____.
JEE Mains 2024 31 Jan Morning Shift
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