17-Phys-A3 Electromagnetics
Worked solutions to 5 past sittings (2016–2019), 41 questions. Pick a sitting, or start from a topic below.
Questions by sitting
December 2019
- Question 1: Terminated Transmission Line — Standing-Wave Measurement
- Question 2: Oblique Incidence at a Lucite–Free-Space Interface
- Question 3: Step Response on a Mismatched Transmission Line
- Question 4: WR-90 Rectangular Waveguide Modes
- Question 5: EMF Induced in a Loop by a Time-Varying Field
- Question 6: Parallel-Plate Capacitor with a Lossless Dielectric
- Question 7: Field and Potential of a Charged Spherical Conductor
December 2017
- Question 1: Pulsed Transmission Line — Generator Terminal Voltage
- Question 2: Shorted-Stub Length for Match and Isolation
- Question 3: Two Crossed Plane Waves — Planes of Circular Polarization
- Question 4: Rectangular Waveguide Cutoff Frequencies
- Question 5: EMF Induced in a Loop by a Plane Wave
- Question 6: Magnetic Field Above a Semicircular Loop with Straight Leads
- Question 7: Self-Inductance of Two Combined Solenoids
- Question 8: Crossed Current Elements — Plane of Linear Polarization
December 2016
- Question 1: Terminal Voltage of a Matched Pulse Generator on a Mismatched Line
- Question 2: Parallel Short-Circuited and Open-Circuited Stub Termination
- Question 3: Characteristic Impedance of a Coaxial Line with a Partial Dielectric Coating
- Question 4: Polarization of Two Orthogonal Plane Waves
- Question 5: EMF of a Rotating Direction-Finding Loop Antenna
- Question 6: Lowest Resonant Frequencies of a Rectangular Waveguide Cavity
- Question 7: Torque on a Current Loop in a Uniform Field
- Question 8: Power Density Radiated by a Short Horizontal Current Element
May 2016
- Question 1: Step Response of a Transmission Line Feeding a Resistive Load
- Question 2: Standing Wave Ratio and Real-Impedance Point on a Line Feeding a Complex Load
- Question 3: Polarization of Two In-Phase, Counter-Propagating Orthogonally Polarized Plane Waves
- Question 4: Shortest and Longest Guide Wavelengths in a Rectangular Waveguide
- Question 5: Inductance and Stored Energy of a Partially Ferromagnetic-Cored Solenoid
- Question 6: Per-Unit-Length Parameters of a Parallel-Strip Transmission Line
- Question 7: Propagation Velocity and Loss of a Low-Loss Transmission Line
- Question 8: Magnetic Field of a Short Vertical Radiating Element
Undated paper
- Question 1: Oblique Incidence at a Free-Space–Silica Interface
- Question 2: Steady-State Standing Wave on a Complex-Loaded Line
- Question 3: Step Response on a Mismatched Transmission Line
- Question 4: Rectangular Tunnel as a Waveguide — Cutoff and Evanescent Decay
- Question 5: Electric Field and Voltage of a Radially-Varying Spherical Charge
- Question 6: Axial Resistance, Current Density and Power of a Solid Cylindrical Resistor
- Question 7: Superposed D and E Fields of an Infinite Line Charge and a Point Charge
- Question 8: Magnetic Field of a Wire with Radially-Varying Current Density
- Question 9: On-Axis Vector Potential, Magnetic Field and Flux of a Current Loop
- Question 10: Radiation Resistance, Efficiency and Field Intensity of a Steel Wire Antenna