Engineering Physics Unit 2 – Electromagnetic Field Theory: AKTU previous year questions
43 AKTU questions from Unit 2 (Electromagnetic Field Theory) asked in 2021–2026, tagged by marks, year and topic. In short: about 25 marks of every paper come from this unit; the most asked topic is Plane Electromagnetic Waves (19 times); 38 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.
Unit 2 previous year questions
- State the physical significance of displacement current in Maxwell's equations. (2 marks, 2026, Basic Laws Electricity Magnetism)
- Explain the concept of Poynting vector and discuss its physical meaning. (7 marks, 2026, Poynting Vector and Theorem)
- Deduce the equation for the propagation of plane electromagnetic waves in the free space. Show that the electric and magnetic vectors are normal to each other and to the direction of propagation of the wave. (7 marks, 2026, Plane Electromagnetic Waves)
- Explain the principle of conservation of electric charge and discuss its importance in electromagnetic theory. (7 marks, 2026, Basic Laws Electricity Magnetism)
- Explain the term skin depth with necessary formulae. (2 marks, 2025, Plane Electromagnetic Waves)
- An electromagnetic wave of frequency 10 MHz is incident normally on a good conductor (e.g., copper) with conductivity σ = 5.8 × 10⁷ S/m and relative permeability μᵣ = 1. What is the skin depth δ of the wave in the conductor? (Use μ₀ = 4π × 10⁻⁷ H/m) (2 marks, 2025, Plane Electromagnetic Waves)
- Derive differential form of Maxwell's equations. (7 marks, 2025, Maxwell Equations)
- Derive electromagnetic wave equation in free space. Prove that electromagnetic wave propagates with speed of light. (7 marks, 2025, Plane Electromagnetic Waves)
- Derive work-energy theorem for the flow of energy in an electromagnetic field. (7 marks, 2025, Poynting Vector and Theorem)
- State and Prove Poynting theorem. (7 marks, 2025, Poynting Vector and Theorem)
- Assuming that all the energy from a 1000 watt lamp is radiated uniformly; calculate the electric field and magnetic field of radiations at a distance of 5m from the lamp. (7 marks, 2025, Plane Electromagnetic Waves)
- Derive the wave equations for electric and magnetic fields in vacuum using Maxwell's equations. Discuss the transverse nature of electromagnetic waves and explain how the electric and magnetic fields are oriented with respect to the direction of propagation. (7 marks, 2025, Plane Electromagnetic Waves)
Most asked Unit 2 topics
- Plane Electromagnetic Waves – asked 19 times
- Poynting Vector and Theorem – asked 12 times
- Basic Laws Electricity Magnetism – asked 8 times
Unit 2 question pattern
- 2-mark questions: 13 asked in 2021–2026
- 7-mark questions: 21 asked in 2021–2026
- 10-mark questions: 9 asked in 2021–2026
- About 25 marks from Unit 2 in every paper
- 38 questions were asked again in a later year
Unit 2 questions year by year
- 2026: 4 Unit 2 questions asked (23 marks across that year's papers)
- 2025: 8 Unit 2 questions asked (46 marks across that year's papers)
- 2024: 8 Unit 2 questions asked (46 marks across that year's papers)
- 2023: 8 Unit 2 questions asked (46 marks across that year's papers)
- 2022: 10 Unit 2 questions asked (68 marks across that year's papers)
- 2021: 5 Unit 2 questions asked (34 marks across that year's papers)