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General Knowledge :: Physics

  1. For which of the following substances, the resistance decreases with increase in temperature?

  2. A.

     Pure silicon

    B.

     Copper

    C.

     Nichrome

    D.

     Platinum

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  3. The S.I. unit of electric charge is :

  4. A.

     Ampere

    B.

     Coulomb

    C.

     E.s.u

    D.

     Kelvin

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  5. Indicate the false statement about the resistance of a wire

  6. A.

     It depends on material of wire

    B.

     It is directly proportional to the length of wire

    C.

     It is directly proportional to the area of cross-section of wire

    D.

     Resistance of metallic wire increases with increase in temperature

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  7. The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as:

  8. A.

     Avogadro's law

    B.

     Rault's law

    C.

     Ohms law

    D.

     Faraday's law

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  9. What is the SI unit of electric current?

  10. A.

     Newton

    B.

     Joule

    C.

     Ampere

    D.

     Watt

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  11. The rate of flow of electric charge is measured in

  12. A.

     Ampere

    B.

     Coulomb

    C.

     Ampere/coulomb

    D.

     Ampere-coulomb

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  13. A device which is used to limit the current in an electrical circuit is called a

  14. A.

     Grid

    B.

     Fuse

    C.

     Hub

    D.

     Conductor

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  15. Materials that allow electricity to flow are called

  16. A.

     Insulators

    B.

     Conductors

    C.

     Electron flows

    D.

     Stimulators

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  17. The fundamental scientific principle in the operation of battery is

  18. A.

     Acid-base interaction

    B.

     Dialysis

    C.

     Dissociation of electrolytes

    D.

     Oxidation-reduction

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  19. If the current flowing through a circuit is 0.6 A for 6 mins, the amount of electric charge flowing through it is ________

  20. A.

     360C

    B.

     216 C

    C.

     60 C

    D.

     36 C

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