Gujarat Technological UniversitySummer 2026 examination

GTU BE04009021 Engineering Electromagnetics Summer 2026 Question Paper & PDF

B.E. · Electrical Engineering · Semester 4 · Subject code BE04009021
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 10:30 AM – 1:00 PM
Questions
5 with internal choice
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Q.1

14 Marks
(a)
3 marks
State and explain Coulomb's law.
(b)
4 marks

Explain cylindrical coordinate system in detail. Also, write the equations for differential length, differential surface and differential volume element for cylindrical coordinate system.

(c)
7 marks

Derive the equation of electric field intensity at a point due to infinite surface charge placed on y-z plane.

Q.2

14 Marks
(a)
3 marks
State Gauss's Law. Derive mathematical formulation of Gauss's Law.
(b)
4 marks
Derive Maxwell's first equation as applied to electrostatic using Gauss's Law.
(c)
7 marks

Define potential difference. Derive relation between Electric field and potential gradient as E = - ∇V.

(c)
7 marks
A triangle is defined by three points A (2,-5,1), B (-3,2,4) and C (0,3,1). Find
1)RBC X RBA
2)the area of triangle
3)a unit vector perpendicular to the plane in which the triangle is located.

Q.3

14 Marks
(a)
3 marks
Derive Poisson's and Laplace's Equation.
(b)
4 marks
Derive point form of continuity equation.
(c)
7 marks

Discuss application of Gauss's law to differential volume element and hence explain divergence theorem.

(a)
3 marks
Define displacement current and current density.
(b)
4 marks

Explain electric dipole and derive equation of potential at any distant point from dipole.

(c)
7 marks
Derive the boundary conditions for the interface between conductor -dielectric.

Q.4

14 Marks
(a)
3 marks
State and explain Ampere's circuital law.
(b)
4 marks
Explain scalar and vector magnetic potential.
(c)
7 marks
Discuss Stokes' theorem.
(a)
3 marks
Classify magnetic material.
(b)
4 marks
State and explain Biot-Savart's' Law.
(c)
7 marks
Obtain the expression curl H=J.

Q.5

14 Marks
(a)
3 marks
Explain concept of inductance and mutual inductance.
(b)
4 marks
Explain the force between two differential current element.
(c)
7 marks
Derive the equation of transmission line with the help of equivalent circuit.
(a)
3 marks
Obtain Lorentz force equation on a charged particle.
(b)
4 marks
Write Maxwell's equations in point form and integral form.
(c)
7 marks
Explain working of Magnetic levitation based on electromagnetism.

Other Semester 4 subjects

BE Electrical

3140911
Economics for Engineers
3140912
Electromagnetic Fields
3140913
Electrical Machine- I
3140914
Power System- I

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About this paper

Official Gujarat Technological University (GTU) examination paper for Engineering Electromagnetics (Summer 2026, B.E. · Electrical Engineering, Sem 4). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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