When a Cube Is Inscribed in a Sphere of Radius

question 21

Multiple Choice

When a cube is inscribed in a sphere of radius r, the length L of a side of the cube is . If a positive point charge Q is placed at the center of the spherical surface, the ratio of the electric flux Φ_sphere at the spherical surface to the flux Φ_cube at the surface of the cube is

• A) .
• B) .
• C) 1.
• D) .
• E) .

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