Question

A charge q is placed at the centre of the open end of a
cylindrical vessel. The flux of the electric field through the
surface of the vessel is
(a) zero (b) q/ℰ₀
(c) q/2ℰ₀ (d) 2q/ℰ₀

Answer 1

Answer:

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Explanation:

so, when charge Q is placed at the center of open end of a cylindrical vessel then only half of the charge will contribute to the flux, because half will lie inside the surface and half will lie outside the surface. Hence the answer is option (c).