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Current Electri...

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  • Question 1
    4 / -1

    The drift velocity does not depend upon

  • Question 2
    4 / -1

    The resistance of a 5 cm long wire is 10 Ω. It is uniformly stretched so that its length becomes 20 cm.The resistance of the wire is

  • Question 3
    4 / -1

    The resistance of an incandescent lamp is

  • Question 4
    4 / -1

    In the figure a carbon resistor has bands of different colours on its body as mentioned in the figure. The value of the resistance is

  • Question 5
    4 / -1

    By increasing the temperature, the specific resistance of a conductor and a semiconductor

  • Question 6
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  • Question 7
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    The drift velocity of free electrons in a conductor is v when a current i is flowing in it. If both the radius and current are doubled, then drift velocity will be

  • Question 8
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    Two wires of same material have length L and 2L and cross-sectional areas 4A and A respectively. The ratioof their specific resistances would be

  • Question 9
    4 / -1

    When a current flows through a conductor itstemperature

  • Question 10
    4 / -1

    A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance of

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