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Current Electri...

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  • Question 1
    4 / -1

    The electrical resistance of a conductor depends upon

  • Question 2
    4 / -1

    The voltage V and current. I graphs for a conductor at two different temperatures T1 and T2 are shown in the figure.
    image
    The relation between T1 and T2 is

  • Question 3
    4 / -1

    A wire of resistance 4Ω is used to wind a coil of radius 7cm. The wire has a diameter of  1.4mm  and the specific resistance of its material is 2 × 10−7Ωm. The number of turns in the coil is

  • Question 4
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    A cylindrical rod is reformed to half of its original length keeping volume constant. If its resistance before this change were R, then the resistance after reformation of rod will be

  • Question 5
    4 / -1

    A wire with 15 Ω resistance is stretched by one tenth of its original length and volume of wire is kept constant. Then its resistance will be

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