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04-BS-9: May 2014

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

  1. Question 1 E Field and Potential Between Two Charged Layers
  2. Question 2 Coaxial Capacitor — Capacitance and Breakdown Voltage
  3. Question 3 B Field at the Midpoint of a DC Transmission Line
  4. Question 4 B Field at the Centre of a Bent Semicircular Loop
  5. Question 5 RMS EMF Induced in a Loop by an Oscillating Horizontal Field
  6. Question 6 Solenoid Inductance With a Partial Magnetic Slug
  7. Question 7 Electrostatic Energy of a Point Charge and Four Corner Charges
  8. Question 8 Velocity-Selector Capacitor Voltage for a Moving Electron

Start with Question 1 →

National Exams — May 2014 — 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 — electrostatics, Gauss's law, capacitance, magnetostatics, Faraday's law; Young & Freedman, University Physics with Modern Physics — induced EMF and AC quantities.