Electrostatic Potential and Capacitance

Bihar Board Class 12 · Physics · 49 past questions

1. Q1 2026 Set A

   When a dielectric is placed in an external electric field, the effective electric field inside the dielectric

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2. Q2 2026 Set A

   A capacitor of capacitance 1 μF is kept at 1 V potential difference between the plates. The charge on the…

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3. Q3 2026 Set A

   When an alpha-particle is brought towards another alpha-particle, the potential energy of the system

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4. Q4 2026 Set A

   Dielectric constant of water is

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5. Q5 2026 Set A

   In an electric field with intensity $E = 0$, the change of potential $V$ with distance $r$ will be

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6. Q6 2026 Set A

   If the area of plates of a capacitor is halved, then the capacitance will

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7. Q7 2025 Set D

   Which one of the following is unit of capacity?

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8. Q8 2025 Set D2024 Set A

   The capacity of any condenser does not depend upon

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9. Q9 2025 Set D

   Which of the following statements is true for two point charges of opposite sign?

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10. Q10 2025 Set D

    The speed of an electron accelerated from rest under a potential difference $V$ is

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11. Q11 2025 Set D

    In parallel combination of condensers, which quantity remains same for each condenser?

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12. Q12 2025 Set D

    On inserting a dielectric material between two positive charges in air, the value of repulsive force will

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13. Q13 2025 Set D

    A capacitor of $100\,\mu F$ is charged to 100 volt. The energy stored in it will be

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14. Q14 2024 Set A2019

    What is Electrical dipole? Find an expression for electric potential any point due to an electric dipole. (with a figure)

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15. Q15 2024 Set A

    In broad-side-on position, the electric potential due to electric dipole is

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16. Q16 2024 Set A

    An electron is accelerated to 5 volt potential difference. The energy gained by the electron will be

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17. Q17 2024 Set A

    The relation between electric field ( $E$ ) and electric potential ( $V$ ) is

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18. Q18 2024 Set A

    The electrostatic energy of the system made by two electric dipoles kept at a distance ' $r$ ' is…

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19. Q19 2024 Set A

    Picofarad is the unit of

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20. Q20 2024 Set A

    The capacity of a spherical conductor is $1.0\ \mu F$. Its radius will be

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21. Q21 2024 Set A

    The dielectric constant of a metal is

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22. Q22 2024 Set A

    Which of the following is blocked by a capacitor ?

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23. Q23 2024 Set A

    Find the increase in energy of a condenser of capacity 6 $\mu$F on changing potential difference from 10 V to…

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24. Q24 2023 Set F

    The net charge on a charged capacitor is

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25. Q25 2023 Set F

    Three capacitors of capacitance 6 µF are available. The minimum and maximum capacitances obtained are

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26. Q26 2023 Set F

    64 identical drops each of capacity 5 $\mu$F combine to form a big drop. What will be the capacity of the big…

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27. Q27 2023 Set F

    If the distance between the two charges is increased, then the electrostatic potential energy of the charges

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28. Q28 2023 Set F2021 Set A

    The value of electric potential at a distance $r$ from a point charge $q$ is

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29. Q29 2022 Set I

    Capacity of spherical condenser is

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30. Q30 2022 Set I

    The capacity of any conductor is

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31. Q31 2022 Set I

    Energy of a charged conductor is

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32. Q32 2022 Set I

    If $n$ capacitors of equal capacity $C_1$ are connected in parallel, the equivalent capacity will be

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33. Q33 2022 Set I

    Dielectric strength for air is

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34. Q34 2021 Set A

    The dielectric constant of water is

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35. Q35 2021 Set A

    Electrical capacitance of earth of radius $R$ is

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36. Q36 2021 Set A

    Electric-potential is equal to

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37. Q37 2021 Set A

    One farad is equal to

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38. Q38 2021 Set A

    Potential energy of a charged conductor is

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39. Q39 2021 Set A

    Potential gradient is equal to

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40. Q40 2021 Set A

    Which of the following is correct for the capacity of a parallel plate capacitor ?

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41. Q41 2019

    The electric potential in equatorial position of an electric dipole is

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42. Q42 2019

    The stored energy, of a capacitor charged to 100 V, is 1 J. capacitor is

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43. Q43 2019

    Establish the relationship between electric field intensity and electric potential.

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44. Q44 2019

    The equivalent capacitance of three equal capacitors connected in series combination is $6\mu F$.

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45. Q45 2018

    Two capacitors $C_1 = 2\mu F$ and $C_2 = 4\mu F$ are connected in series and a potential difference (p.d) of…

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46. Q46 2018

    Minimum number of capacitors of $2\mu F$ each required to obtain a capacitance of $5\mu F$ will be

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47. Q47 2018

    Evaluate the capacitance of a parallel plate capacitor, having parallel plates of area 6 cm² placed at a…

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48. Q48 2017

    Three capacitors each of capacitors each of capacity C are connected in series. The resultant capacity will…

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49. Q49 2017

    Potential due to a system of charge is V=3+2x in S.I system. What will be value of electric field at X=2m?

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