Electrostatics

JEE Main level, single correct, medium

307 of 311

Question 307 of 311

A cone of base radius RR and height hh is located in a uniform electric field E→\overrightarrow{\mathrm{E}} parallel to its base. The electric flux entering the cone is:

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Answer: (B) EhR

Electric flux, ϕ=E(ds)cos⁡θ\phi=E(d s) \cos \theta =E(hR)cos⁡0∘=EhR=E(h R) \cos 0^{\circ}=E h R

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