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Physics Test 12...

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  • Question 1
    4 / -1

    If an electron is brought towards an another electron, the electric potential energy of the system

  • Question 2
    4 / -1

    A hollow charged metal sphere has radius r. If the potential difference between its surface and a point at a distance 3r from the centre is V, then electric field intensity at a distance 3r is

  • Question 3
    4 / -1

    If the separation between the plates of a capacitor is 5 mm, then the area of the plate of a 3 F parallel plate capacitor is

  • Question 4
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    An insulated charged sphere of radius 5 cm has a potential of 10 V at the surface. The potential at the centre will be

  • Question 5
    4 / -1

    A particle of mass 2 g and charge  is held at a distance of 1m from a fixed charge 1mC. If the particle is released it will be repelled. The speed of particle when it is at a distance of 10 m from the fixed charge is

  • Question 6
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    Two materials having the dielectric constants K1 and K2, are filled between two parallel plates of a capacitor, which is shown in the figure. The capacity of the capacitor is

  • Question 7
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    Two point charges Q and –2Q are placed at some distance apart. If the electric field at the location of Q is E, the electric field at the location of –2Q will be

  • Question 8
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    Shown in the figure is a distribution of charges. The flux of electric field due to these charges through the surface S is

  • Question 9
    4 / -1

    Ten identical cells each of emf E and internal resistance r are connected in series to form a closed circuit. An ideal voltmeter connected across the three cells will read

  • Question 10
    4 / -1

    What is the equivalent resistance between A and B in the given figure ?

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