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Concepts Of Physics MCQ Edition [Volume 2]PhysicsGauss's Law

A closed surface intersecting a conducting sphere is depicted in the figure. If a positive charge is positioned at point P , the flux of the electric field through the closed surface

Options

  1. Awill become negative
  2. Bwill remain zero
  3. Cwill become positive
  4. Dwill become undefined

Correct answer

C. will become positive

Step-by-step solution

When a positive charge is placed at point P, it induces a negative charge on the closer side (right side) of the conducting sphere due to electrostatic attraction. Consequently, an equal amount of positive charge is induced on the farther side (left side) of the conducting sphere due to repulsion. As seen in the figure, the closed surface encloses the left portion of the conducting sphere. Therefore, the net charge enclosed by the closed surface is positive. According to Gauss's law, the electric flux through a clo

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