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Four charges of 1mu C, 2mu C, 3mu C and ...

Four charges of `1mu C, 2mu C, 3mu C` and `-6 mu C` are placed one at each corner of the square of side `1 m`. The square lies in the x-y plane with its centre at the origin.The electric field at the centre

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The correct Answer is:
A, C
Here total charge is zero

Any point on z-axis, having the same distance from the each vertex of square. So the potential due to all is zero at the point.
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ALLEN -MISCELLANEOUS-Exercise-02
  1. In a uniform electric field, the potential is 10V at the origin of co...

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  2. The potential as a function of x is plotted in figure. Which of the fo...

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  3. Four charges of 1mu C, 2mu C, 3mu C and -6 mu C are placed one at each...

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  4. Potential at a point A is 3 volt and at a point B is 7 V, an electro...

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  5. A particle of charge 1 mu C & mass 1 mg moving with a velocity of 4...

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  6. A particle of mass m and charge q is thrown in a region where uniform ...

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  7. In space of horizontal EF (E = (mg)//q) exist as shown in figure and a...

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  8. The diagram show a small bead of mass m carrying charge q. The bead ca...

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  9. The diagram shows three infinitely long uniform line charges placed on...

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  10. The electric potential decreases uniformly from V to -V along X-axis i...

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  11. A proton and a ionized deuterium are initially at rest and are acceler...

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  12. Three points charges are placed at the corners of an equilateral trian...

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  13. The dipole moment of a system of charge +q distribyted uniformly on a...

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  14. An electric dipole is kept on the axis of a uniformly charged ring at ...

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  15. Point P lies on the axis of a dipole . If the dipole is rotated by 90...

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  16. Two short electric dipole are placed as shown. The energy of electric ...

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  17. Charges Q1 and Q2 lie inside and outside, respectively, of a closed su...

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  18. An electric dipole is placed at the centre of a sphere. Mark the corre...

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  19. An infinite, uniformly charged sheet with surface charge density sigma...

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  20. At a distance of 5 cm and 10 cm outward from the surface of a uniforml...

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