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Question (11)
QN0038805

A point charge  is located at the origin. The electric field (in  ) vector at the point  , as shown in Fig., is                                                                          

 A point charge q= -8.0 nC is located at the origin. The electric field (in NC-1) vector at the point x = 1.2 m, y = -1.6 m, as shown in figure, is

  • (A)

  • (B)

  • (C)

  • (D)

Correct Answer: C
Explanation:

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Question (12)
QN0038806

Figure shows an electric quadrupole, with quadrupole moment . The electric field at a distance from its centre at the axis of the quadrupole is given by                                                           

  • (A)

              

  • (B)

  • (C)

  • (D)

    None of these

Correct Answer: C
Explanation:

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Question (13)
QN0038807

A liquid drop having 6 excess electrons is kept stationary under a uniform electric field of . The density of liquid is . The radius of the drop is (neglect buoyany)   

  • (A)

  • (B)

  • (C)

  • (D)

Correct Answer: B
Explanation:

Density (d).

or

Putting the value of  and  and solving we get

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