Categories

# EC6403 Important questions Electromagnetic Fields

## Sample EC6403 Important questions:

1. Define scalar and vector field? Give its two examples.

2. Define base (unit) vector? What is its function while representing a function?

3. Define rectangle, cylindrical & spherical coordinates.

4. Define line, surface & volume charge density.

5. Define Curl, Divergence & Gradient with mathematical expression.

6. State Stroke‟s theorem & Write mathematical expression for Stroke‟s theorem.

7. State Divergence theorem & Write mathematical expression for Divergence theorem.

8. Convert the point P(3, 4, 5) from the cartesian to spherical coordinates. Prove that curl grad Φ = 0.

9. Determine the gradient of the scalar filed F = 5r2+r Sinθ. Show that vector H = 3y4z2ax+4x3z2ay+3x2y2az is solenoidal.

10. State Coulomb‟s law (or) State Coulomb‟s law in vector form. What are the features of Coulomb‟s law?

11. In XY plane, Q1=100 μC at (2,3)m, experiences a repulsive force of 7.5 N because of Q2 at (10,6)m. Find Q2.

12. State the principle of superposition of fields. A uniform surface charge of σ=2μc/m2 is situated at z=2 plane. What is the value of D at P(1,1,1)m.

13. Define electric field intensity. Mention any two sources of electromagnetic field.

14. State Gauss law. What is the use of Gauss‟s law?

15. State Divergence theorem. Show that .E=0 in the case of a point charge.

16. Define electric flux and electric flux density? Write relation between E & D.

17. Define potential. Distinguish potential & potential difference.

18. Define electric scalar potential. Write down relation between potential & electric field.

19. What is an electric dipole? Write down the potential due to an electric dipole.

20. State nature of conservative field. A point charge +2 nC is located at origin. What is the value of potential at P(1,0,0)m.

 Subject Name Electromagnetic Fields Subject Code EC6403 Regulation 2013