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What is conductor ?...

What is conductor ?

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The substances which have an abundance of free electrons are called conductors. These free electrons move at random throughout the conductor at a givne temperature. In general due to this random motion, three is no net transfer of charges from one end of the conductor to other end and hence no current. When a potential difference is applied by the battery across the ends of the conductor, the free electrons drift towards the positive terminal of the battery, producing a net electric current.
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Knowledge Check

  • The following graph shows current versus voltage values of some unknown conductor. What is the resistance of this conductor?

    A
    2 ohm
    B
    4 ohm
    C
    8 ohm
    D
    1 ohm

  • The following graph shows current versus voltage values of some unknown conductor. What is the resistance of this conductor?

    A
    2 ohm
    B
    4 ohm
    C
    8 ohm
    D
    1 ohm

  • A pure semiconductor behaves slightly as a conductor of

    A
    low temperature
    B
    high temperature
    C
    room temperature
    D
    zero degree

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