Physics (Electro Magnetism) b.sc sem-5_2018 previous question papers download in telugu and English

Physics (Electro Magnetism) sem-5_2018 previous question papers download in Telugu and English

Subject :-(Physics)

Subject name :-(Electro Magnetism)

Year :-(2018)

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Physics_(Solid State Physics) (semester-5)

Physics (Electro Magnetism)_(sem-5) 2018(English medium)-question-paper download

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Physics (Electro Magnetism)_(sem-5) 2018(Telugu medium)-question-paper download

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Important questions

1. Derive an expression for potential 

(V) as a function of electric field (E). 

2. Explain about irrotational nature of electric field. 

3. Calculate the electric potential on the surface of nucleus having radius of 3,14 x 10meter. The atomic number of silver is 47 and e = 1.6 x 10 coulomb. 

4. Derive an expression for the force acting between two parallel current carrying conductors. 

5. Derive the expression for curl and divergence of magnetic field B. A long straight wire carries current of 10 ampere. 

6. Find the magnetic field at a distance of 1Ocm from the wire. 

7. What is electromagnetic induction? State Faraday's law of electromagnetic induction. 

8. State and explain Lenz's law. How it supports law of conservation of energy?

9. In a car spark coil, e.m.f. of 20,000 volt is induced in the secondary when the primary current charges from 4 amp to 0 amp in 20 us. Find the mutual inductance between the primary and secondary windings of this spark coil. 

10. Write derivative form of Maxwell's equation in free space. 

11. Derive Maxwell modified amperes law. 

12. Show that has same dimensions as velocity. Where u is permeability and E is permittivity of medium.

13. (a) Define electric flux and Gauss's law and derive expression fot electric final strength at a point near the infinite plane sheet of charge. 

Or 

(b) Define potential. Calculate the electric potential from electric field lor a spherical charge distribution. 

14. (a) Find the magnetic field intensity at a point on the axis of a circular coil cHrrying current. Show by a graph the field varics along the axis. 

Or 

(b) Explain the torque acting on a current loop. Give the theory of ballistic galvanometer. 

15. (a) State and explain Faraday's and Lenz's law in electromagnetic induction. Derive an expression for the self inductance of a long solenoid. 

Or 

(b) Write Maxwell's equations in differential and integral forms 

16. (a) Starting from Maxwell's cquation, derive the wave equation for E and B in dielectric medium. 

Or 

(b) Define reflection coefficient and transmission cocfficient. Derive their value of E vector in case of reflection from perfect dielectric.

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