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jkhu

on April 26, 2026

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Best Electronics Projects for ECE Students

Electromagnetic therory 2023 pyq aktu dbrau with solution

✅ SECTION A (All compulsory) 1. Biot-Savart Law Current element I d l ⃗ I\,d\vec{l} I d l se magnetic field: d B ⃗ = μ 0 4 π I d l ⃗ × r ^ r 2 d\vec{B} = \frac{\mu_0}{4\pi} \frac{I\, d\vec{l} \times \hat{r}}{r^2} d B = 4 π μ 0 r 2 I d l × r ^ 2. Curl of electric field: 👉 Answer: (b) Rotational 3. Electric field (E = vB) E = v B = 5 × 3.6 = 18 E = vB = 5 \times 3.6 = 18 E = v B = 5 × 3.6 = 18 👉 Answer: (b) 18 4. Del operator (∇): 👉 Used for Gradient, Divergence, Curl 👉 Answer: (d) Velocity differential operator (best match) 5. Scalar factor in Cartesian system: 👉 True 6. Stokes theorem uses: 👉 Answer: (c) Curl 7. Electric field intensity definition: E = F q E = \frac{F}{q} E = q F 👉 Answer: (c) 8. Statement: 👉 False (Electric field is maximum on surface, magnetic depends on current) 9. Vector conversion Given A = 3i − 2j − 4k at (2,3,3) Correct option: 👉 (a) −3.6j − 4k 10. Time varying currents produce: 👉 Answer: (c) Elect...

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