Electricity

Bihar Board Class 10 · Science · 40 past questions

1. Q1 2026

   Which instrument does not have positive (+) and negative (–) signs?

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2. Q2 2026

   Which of the following combinations increases the value of resistance?

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3. Q3 2026

   What kind of conductor is pure water?

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4. Q4 2026

   Which of the following is the best conductor?

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5. Q5 2026

   The frequency of alternating current supplied to houses in India is

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6. Q6 2026

   The melting point of a fuse should be

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7. Q7 2026

   Which is not a safety device ?

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8. Q8 2025

   The unit of resistivity in a conductor is

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9. Q9 2025

   How many calories are there in 1 joule ?

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10. Q10 2024

    Out of a combination of resistors, one resistor is removed and it is found that the net resistance has…

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11. Q11 2024

    Two appliances rated as ( 60 W, 200 V ) and ( 40 W, 200 V ) are connected across 100 V supply in a room. The…

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12. Q12 2024

    Potential difference is measured by

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13. Q13 2024

    Which of the following statements is true ?

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14. Q14 2024

    In domestic electric circuit the colour of neutral wire is

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15. Q15 2024

    The resistance of the filament of an electric bulb is 1200 ohms. How much electric current will the bulb draw…

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16. Q16 2024

    The electromotive force of a cell is 1.5 V. The work done on passing a charge of 1 C will be

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17. Q17 2023

    To increase the value of the resistance, resistors should be connected in

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18. Q18 2023

    Which instrument does not have a positive (+) and a negative (-) sign?

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19. Q19 2023

    There are 20 divisions between the zero (0) and 2A number of an ammeter. What is the least count of the…

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20. Q20 2023

    If several resistances are parallel, their equivalent resistance will be

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21. Q21 2022

    Which one of the following units is equal to watt?

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22. Q22 2022

    The coil of the electric heater wire is made up of

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23. Q23 2022

    The property of a circuit that converts electrical energy into heat is

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24. Q24 2022

    The potential difference across an electric cell upon drawing current becomes

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25. Q25 2022

    When an electric current flows through a conductor the moving particles are

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26. Q26 2022

    How much work is done in moving 2 coulombs of charge between two points of 12 V potential difference ?

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27. Q27 2022

    What is used to measure the current in an electric circuit ?

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28. Q28 2022

    Volt (V) is equal to

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29. Q29 2022

    The rate of flow of electric charge is called

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30. Q30 2022

    Which of the following statements is true ?

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31. Q31 2022

    The frequency of alternating current produced in India is

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32. Q32 2022

    One microampere electric current is

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33. Q33 2020

    Which of the following is measured by ammeter?

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34. Q34 2020

    Switches are set

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35. Q35 2020

    Which type of current is obtained from a battery ?

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36. Q36 2020

    S.I. unit of potential difference is

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37. Q37 2018

    There are 20 divisions between 0V and 1V on the scale of a voltmeter. The least count of the voltmeter is -

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38. Q38 2018

    Which one of the following is one micro ampere of electric current?

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39. Q39 2018

    In domestic electric circuit, the colour of neutral wire is -

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40. Q40 2017

    The reason of accidents from electricity in houses is-

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