**B.Sc. PHYSICS SYLLABUS UNDER CBCS II YEAR B.Sc. -IV SEMESTER**

**[2020-21 Batch onwards]**

**Course IV: ELECTRICITY, MAGNETISM AND ELECTRONICS**

**(For Non-Maths Combinations)**

**Work load: 60 hrs per semester 4 hrs/week**

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**Course outcomes:**

*On successful completion of this course, the students will be able to:*

*Develop an understanding on the concepts of Electricity, Magnetism and Electronics and their**Understand the Gauss’s law in electrostatics and the concepts of electric potential, equipotential surfaces and the classifications of dielectric materials.**Distinguish between magnetic effect of electric current and electromagnetic induction and apply the related laws in appropriate**Comprehend the role and importance of Faraday’s laws and Lenz ‘s law in electromagnetic**Understand Biot and Savart’s law and Ampere’s circuital law to describe and explain the generation of magnetic fields by electrical currents.**Understand the Kirchoff’s laws and its application to Wheatstone’s bridge**Disseminate the fundamentals of digital electronics and principles of p-n junction diodes and transistors.*

# UNIT-1:

**Electric field and Potential (12 Hrs)**

Coulomb’s law ; Electric field and Electric lines of force, Electric flux; Gauss’s law statement and its proof; Applications of Gauss Law: Electric field intensity due to (i) Uniformly charged sphere (ii) an infinite conducting sheet of charge (No Derivation- qualitative ideas only); Electrical potential; Equipotential surfaces with examples; Potential due to electric dipole.

# UNIT-II:

**Capacitance and Dielectrics(12 Hrs)**

Electric capacitance ; Principle of condenser, Capacity of a parallel plate capacitor with and without dielectric; Energy stored in a capacitor, Electric dipole moment; Di-electrics and examples, Types of dielectrics;Effect of electric field on dielectrics; Electric displacement D, electric polarization P, Dielectric constant, Permeability & Susceptibility (Definitions only); Relation between D,E and P

# UNIT-III:

**Current Electricity(12 Hrs)**

Electric current and current density, drift velocity; Relationship between current density and drift velocity, Electrical resistance and resistivity, conductivity, Ohm’s law and its limitations; Kirchhoff’s laws –Statements and explanations; Application of Kirchhoff’s laws to Wheatstone bridge, sensitivity of Wheatstone bridge

# UNIT-IV:

**Electromagnetism: (12 Hrs)**

Biot-Savart’s law-Explanation; Application of Biot-Savart’s law to circular coil carrying current (No derivation-qualitative treatment only) ; Ampere’s law ; Force on (i) charged particles and (ii) current carrying conductor in the magnetic field, Hall effect and its applications.

**Electromagnetic induction:**Faraday’s laws of electromagnetic induction, Lenz’s law, Phenomena of Self induction and Mutual induction, Self inductance of a long solenoid,

# UNIT-V:

**Basic Electronics: (06Hrs)**

PN junction diode and its V-I characteristics, Half and full wave rectifiers (working- qualitative ideas only); Transistors- PNP and NPN transistors& their working; CE, CC and CB Configurations, CE transistor –Input and output characteristics.

**7. Digital Electronics: (06 Hrs)**

Number system, conversion of binary to decimal and vice versa, De Morgan’s theorems Statements& Proofs; Basic Logic gates and their verification of truth tables, NAND and NOR gates as universal gates, Half and Full adders.

# REFERENCE BOOKS

- Sc., Physics, Vol.3, Telugu Academy, Hyderabad
- Modern Physics by R. Murugeshan and Kiruthiga Siva Prasath – S. Chand &
- Electricity and Magnetism, Brijlal and Subramanyam. Ratan Prakashan
- Principles of Electronics, V.K. Mehta, S.Chand& ,
- Digital Principles and Applications, A.P. Malvino and D.P.Leach, Mc GrawHill Edition.