Current Electricity

Bihar Board Class 12 · Physics · 60 past questions

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1. Q2 2026 Set A

   In a metallic conductor, the current is carried by

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2. Q7 2026 Set A

   The relationship between current density $\vec{J}$, specific conductance $\sigma$ and electric field…

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3. Q11 2025 Set D

   The relation between drift velocity $v$ of free electrons in conductor in electric conduction and potential…

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4. Q16 2025 Set D

   The unit of current density is

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5. Q17 2025 Set D

   If the length of a conductor is doubled while keeping the potential difference across it constant, then the…

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6. Q25 2023 Set F

   The motion of electron inside the conductor is

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7. Q26 2023 Set F

   The relation between the drift velocity ($V_d$) and applied electric field (E) of a conductor is

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8. Q30 2022 Set I

   Which of the following is correct for current density?

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9. Q31 2022 Set I

   Which of the following is correct for mobility?

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10. Q32 2022 Set I

    Which of the following is correct?

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11. Q34 2022 Set I

    Ampere-hour is the unit of

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12. Q36 2021 Set A

    One ampere is equal to

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13. Q37 2021 Set A

    Unit of electromotive force is

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14. Q49 2019

    The current flowing; in a wire is 1 A. if the charge of an electron is $1.6\times10^{-19}C$, then the number…

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15. Q52 2018

    The Drift velocity ($v_d$) and applied electric field (E) of a conductor are related as…

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16. Q54 2018

    Using theory of dirft velocity, express Ohm's law.

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