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GATE 2016 EE (EE2) – Question 35

Electromagnetic Fields · Coulomb's Law, Electric Field Intensity, Electric Flux Density, Gauss's Law, Divergence · 1 mark · Multiple choice

The two electrodes shown in cross-section are at the same potential. At which marked point is electric field greatest?

Diagram for GATE 2016 EE (EE2) question 35
  1. A
  2. B
  3. C
  4. D

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Show answer and explanation

Correct answer: (A) A

Explanation

Inside a conducting electrode the electrostatic field is zero, excluding D. On a curved surface the field is stronger where charge density concentrates, usually near smaller radii of curvature.

A and C are sharper than B, but the facing same-potential electrode shields the gap-facing side C. The exposed outer tip A therefore has the greatest field among the marked points. Hence **A**.

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