The GATE Grind

GATE Electromagnetic theory: dielectrics and conductors – Previous Year Questions

6 GATE previous year questions on dielectrics and conductors (Electromagnetic theory, Physics) with answers and explanations, from every paper.

  1. GATE 2022 PH Q53 (2 marks, Multiple select) – A parallel-plate capacitor of area A and spacing d stays connected to voltage V while pulled quasistatically to 2d. Which statements hold?
  2. GATE 2026 PH Q30 (1 mark, Numerical answer) – A dielectric sphere carries a uniform polarization P=26\ C\,cm-2. The magnitude of the electric field at the center of the sphere is E109\ N\,C-1. The…
  3. GATE 2025 PH Q31 (1 mark, Numerical answer) – A linear dielectric sphere of radius R has a uniform frozen-in polarization along the z-axis. Its center initially coincides with the origin, about…
  4. GATE 2025 PH Q56 (2 marks, Multiple select) – A neutral conducting sphere of radius R in uniform field E 0 z has outside potential V(r,)=V 0-E 0r(1-R3/r3). Which option(s) is/are correct?
  5. GATE 2025 PH Q57 (2 marks, Multiple select) – A point charge q is placed at the origin inside an infinite linear dielectric with relative permittivity r. Which option(s) is/are correct?
  6. GATE 2024 PH Q40 (2 marks, Multiple choice) – A parallel capacitor has potential zero at x = 0 and V 0 at x = d, filled by = 0(1+x/d). Neglect edges. The field is