DR. V. S.
KRISHNA GOVERNEMNT DEGREE COLLEGE (A), VISAKHAPATNAM
B.Sc Honours (Physics major and minor)
CODE: SEMESTER-4
QUESTION BANK
ELECTRICITY AND MAGNETISM
Time : 3hours Max marks:60M
SECTION-A (Short answer type questions)
Answer Any Five of the below questions. 5x4=20M
1. Explain electric polarization in a dielectric medium?
2. What are polar and non-polar dielectrics?
3. Write a short note on Kirchoff’s laws?
4. Define the terms drift velocity, current density?
5. Write the applications of Hall effect?
6. State and explain self and mutual induction?
7. Obtain expression for velocity of electromagnetic wave?
8. Write a short note on pointing vector?
9. Write a short note on power factor in ac circuit?
10. Discuss the AC current through pure inductance
SECTION-B (Essay type questions)
Answer All the questions 5x8=40M
11. State and prove Gauss’s law in electrostatics?
(OR)
12. Define D, E &P. Deduce relation between them .
13. What is Wheatstone’s bridge? Derive the bridge balancing equation with neat sketch?
(OR)
14. State and Maximum power transfer theorem.
15. Calculate the magnetic induction at a point on the axis passing through the center of a circular wire
carrying current using Biot-savart’s law?
(OR)
16. State and explain faraday’s laws of electromagnetic induction? Also state and Lenz’s law?
17. Derive the Maxwell’s equation in differential forms?
(OR)
18. Derive plane electromagnetic wave equation and prove transverse nature of electromagnetic waves?
19. Discuss growth and decay of current in LR circuit?
(OR)
20. Describe the behavior of series LCR circuit when an alternating voltage is applied to it. Explain the
condition of resonance?
DR. V. S. KRISHNA GOVERNEMNT DEGREE COLLEGE (A), VISAKHAPATNAM
B.Sc Honours (Physics major and minor)
CODE: SEMESTER-4
QUESTION BANK
ELECTRICITY AND MAGNETISM
Time : 3hours Max marks:60M
Long Answer Questions
UNIT-1
1. State and prove Gauss’s law in electrostatics?
2. Define electric field intensity. Calculate the electric field intensity due to uniformly charged sphere.
3. Define D, E and P. establish the relation between them.
4. UNIT-2
5. What is Wheatstone’s bridge? Derive the bridge balancing equation with neat sketch?
6. State and prove maximum power transfer theorem?
7. State and explain superposition theorem?
UNIT-3
8. Calculate the magnetic induction at a point on the axis passing through the center of a circular wire
carrying current using Biot-savart’s law?
9. Calculate the magnetic field inside the long solenoid using Biot-savart’s law.
10. State and explain faraday’s laws of electromagnetic induction? Also state and Lenz’s law?
UNIT-4
11. Derive the Maxwell’s equation in differential forms?
12. Derive plane electromagnetic wave equation and prove transverse nature of electromagnetic waves?
UNIT-5
13. Discuss growth and decay of current in LR circuit?
14. Describe the behavior of series LCR circuit when an alternating voltage is applied to it. Explain the
condition of resonance?
Short Answer Questions
UNIT-1
1. What is electric potential and explain about equipotential surfaces?
2. What are polar and non-polar dielectrics?
3. Explain electric polarization in a dielectric medium?
UNIT-2
4. Write a short note on Kirchoff’s laws?
5. Define the terms, drift velocity and current density?
6. Define Norton’s and Thevenin’s Theorems?
UNIT-3
7. Explain Biot-Savart law?
8. Write the applications of Hall effect?
9. State and explain self and mutual induction?
UNIT-4
10. Obtain expression for velocity of electromagnetic wave?
11. Write a short note on pointing vector?
UNIT-5
12. Write a short note on power factor in ac circuit.
13. Discuss the AC current through pure capacitance.
14. Discuss the AC current through pure inductance.
