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An infinitely long wire has uniform linear charge density =2 nC / m . The net flux through a Gaussian cube of side length 3 ~cm , if the wire passes through any two corners of the cube, that are maximally displaced from each other, would be xNm ^2 C ⁻¹ , where x is : [Neglect any edge effects and use 1 4 ₀ =9 10^9 SI units]

Options

  1. A0.72
  2. B1.44
  3. C6.48
  4. D2.16

Correct answer

D. 2.16

Step-by-step solution

aligned & = q _ enc ₀ = 3 a ₀ & =2 10⁻⁹ 3 3 10⁻² 36 10^9 Nm ^2 C ⁻¹ & =2.16 Nm ^2 C ⁻¹ aligned

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