connecting of capacitor with battery,connenctiong of two capacitor questions with solutions

Showing 1–9 of 9 questions

• MCQeasyCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A parallel-plate capacitor has plate area A, separation d and electric field E between the plates. Its stored energy is:

  Options

  • Option A

    (1/2)ε₀E²Ad

  • Option B

    (1/4)ε₀E²Ad

  • Option C

    ($\frac{3}{4}$)ε₀E²Ad

  • Option D

    ε₀E²Ad

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  JEE Mains 2025 24 Jan Morning Shift

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• MCQmediumCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  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:

  Options

  • Option A

    CV²/4

  • Option B

    2CV²

  • Option C

    CV²/2

  • Option D

    3CV²/4

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  JEE Mains 2024 01 Feb Morning Shift

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• NumericmediumCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  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 ______.

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  JEE Mains 2024 05 Apr Morning Shift

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• MCQeasyCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A capacitor C is charged to potential V. The electric flux through a closed surface enclosing only the positive plate is:

  Options

  • Option A

    Zero

  • Option B

    CV/ε₀

  • Option C

    2CV/ε₀

  • Option D

    CV/(2ε₀)

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  JEE Mains11 April 2023Shift 2Evening Shift

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• MCQmediumCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A capacitor of capacitance 2 F is charged to potential V; its stored energy is E₁. It is then connected in parallel to an identical uncharged capacitor. If the final energy is E₂, the ratio E₂/E₁ is:

  Options

  • Option A

    2 : 3

  • Option B

    1 : 2

  • Option C

    1 : 4

  • Option D

    2 : 1

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  JEE Mains11 April 2023Shift 1Morning Shift

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• NumericmediumCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  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 _____ .

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  JEE Mains 2024 30 Jan Morning Shift

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• MCQeasyCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A 100 pF capacitor is charged to 60 V and then disconnected from the battery. A second uncharged capacitor is connected in parallel with it. The final common voltage is 20 V. The capacitance of the second capacitor is:

  Options

  • Option A

    600 pF

  • Option B

    200 pF

  • Option C

    100 pF

  • Option D

    400 pF

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  JEE Mains 2025 3 April Evening Shift

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• MCQmediumCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A parallel-plate air capacitor remains connected to an ideal battery while the plates are pulled apart at a uniform speed. If x is the instantaneous plate separation and the magnitude of the time rate of change of electrostatic energy is proportional to xᵅ, what is α?

  Options

  • Option A

    -2

  • Option B

    1

  • Option C

    -1

  • Option D

    2

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  JEE Mains 2026 4 April Morning Shift

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• NumericeasyCapacitorconnecting of capacitor with battery,connenctiong of two capacitor

  A capacitor P with capacitance 10 × 10⁻⁶ F is fully charged with a potential difference of 6.0 V and disconnected from the battery. The charged capacitor P is connected across another capacitor Q with capacitance 20 × 10⁻⁶ F. The charge on capacitor Q when equilibrium is established will be α × 10⁻⁵ C (assume capacitor Q does not have any charge initially), the value of α is _______ .

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  JEE Mains 202622 January Evening Shift

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