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04-BS-9: May 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Electric Field of a Point-Charge Dipole Off-Axis
  2. Question 2 Stored Energy in a Circular Parallel-Plate Capacitor
  3. Question 3 Magnetic Flux Density Midway Between Two Parallel Current Loops
  4. Question 4 RMS EMF of a Loop Rotating in a Uniform DC Magnetic Field
  5. Question 5 Charge Distribution Producing a Given Piecewise Radial Field
  6. Question 6 Magnetic Field Keeping an Injected Electron on a Straight Path
  7. Question 7 Power Distribution in a DC Generator, Line, and Load
  8. Question 8 Apparent Displacement of a Submerged Object Viewed Obliquely

Start with Question 1 →

National Exams — May 2016 — 04-BS-9 Basic Electromagnetics. Three-hour, closed-book exam (approved Casio/Sharp calculator only). Aids given: $\varepsilon_0=8.85\times10^{-12}$ F/m, $\mu_0=4\pi\times10^{-7}$ H/m, $e=1.6\times10^{-19}$ C. Format: eight questions offered; any five constitute a complete paper and only the first five appearing in the answer book are marked. All eight are solved below for completeness.

Reference texts: Sadiku, Elements of Electromagnetics / Hayt & Buck, Engineering Electromagnetics — Coulomb's law and superposition, Gauss's law and divergence, Biot–Coulomb law and magnetic field of current loops and coaxial conductors, Faraday's law, Lorentz force, capacitance and field energy, DC circuit power distribution; Young & Freedman, University Physics with Modern Physics — refraction geometry.