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Current Electricity Test - 34
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Current Electricity Test - 34
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  • Question 1/10
    4 / -1
    In the absence of applied potential, the electric current flowing through a metallic wire is zero because
  • Question 2/10
    4 / -1
    Dimensions of a block are 1 cm × 1 cm × 100 cm. If specific resistance of its material is 3 × 10–7ohm-m, then the resistance between the opposite rectangular faces is
    Solutions

  • Question 3/10
    4 / -1
    In the above question, the resistance between the square faces is
    Solutions

  • Question 4/10
    4 / -1
    When an electrical appliance is switched on, it responds almost immediately, because
  • Question 5/10
    4 / -1
    The resistance of a wire of uniform diameter d and length L is R. The resistance of another wire of the same material but diameter 2d and length 4L will be
    Solutions

  • Question 6/10
    4 / -1
    It is easier to start a car engine on a hot day than on a cold day. This is because the internal resistance of the car battery
    Solutions

  • Question 7/10
    4 / -1
    5 ampere of current is passed through a metallic conductor. The charge flowing in one minute in coulomb will be
    Solutions

  • Question 8/10
    4 / -1
    A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, the drift velocity of the electron in it
    Solutions

  • Question 9/10
    4 / -1
    An electric wire is connected across a cell of e.m.f. E. The current I is measured by an ammeter of resistance R. According to ohm\'s law
  • Question 10/10
    4 / -1
    The resistances of a wire at temperatures t° C and 0° C are related by
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