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Current Electricity Test - 39
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Current Electricity Test - 39
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  • Question 1/10
    4 / -1
    The drift velocity does not depend upon
    Solutions

  • Question 2/10
    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
    Solutions

  • Question 3/10
    4 / -1
    The resistance of an incandescent lamp is
    Solutions

  • Question 4/10
    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

    Solutions

  • Question 5/10
    4 / -1
    By increasing the temperature, the specific resistance of a conductor and a semiconductor
  • Question 6/10
    4 / -1

    Solutions

  • Question 7/10
    4 / -1
    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
    Solutions

  • Question 8/10
    4 / -1
    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 9/10
    4 / -1
    When a current flows through a conductor itstemperature
  • Question 10/10
    4 / -1
    A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance of
    Solutions

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