Theoretical Physicist

# Applied Physics – Fall 2020

Venue and Class timings: Following are the section-wise details:

• BCS 1A: 08:00 am to 9:20 am, Wednesday and Friday, Room: E&M 11, EE Building.
• BCS 1B: 09:30 am to 10:50 am, Wednesday and Friday, Room: E&M 11, EE Building.

Office Hours:

Please visit CS faculty meeting room on Wednesday and Friday from 11:00 am – 11:30 am

Marking scheme:

Assignments 20%, Midterms (I+II) 30%, Final 50%
Quizzes are exempted by the university due to the COVID-19 pandemic.

MATLAB Manual:

##### Course Content
• Lecture 1: Course Strategic Planning & Overview of Vectors (Lecture Notes)
• Why Mechanics?
• Introduction to Vectors
• Resolution of Vectors
• Unit Vectors
• Lecture 2: Vectors (Lecture Notes)
• Philosophical Discussion on Physical Quantities
• Physical Intuition of Unit Vectors
• Scalar and Vector Product of Vectors
• Numerical Problems
• Lecture 3: Kinematics Tools (Lecture Notes)
• Position and Displacement Vector
• Average and Instantaneous Velocity
• Average and Instantaneous Acceleration
• Related Problems
• Lecture 4: 1D and 2D Motions (Lecture Notes)
• One Dimensional Motion
• Projectile Motion (2D Motion)
• Related Problems

Assignment 1: A1 (PDF) (Due Date: 7th October 2020) Solution: A1Sol (PDF)

• Lecture 5: Numerical Problems of 1D and 2D Motions
• Lecture 6: Dynamics of the Motion (Lecture Notes)
• Newtonian Mechanics and its Limitations
• Quick Overview of General Relativity and Quantum Mechanics
• Define Force and Discuss its Characteristics in a Legitimate Way
• Principle of Superposition
• Frames of Reference (Inertial & Non-Inertial Ones)
• Pseudo Forces (in Non-Inertial Frames)
• Newton’s 1st and 2nd Law of Motion
• Define Mass
• Free-Body Diagram
• Lecture 7: Particular Forces and Implementation of Newton’s Laws (Lecture Notes)
• Exterior & Interior Forces
• The Gravitational Force
• Weight
• The Normal Force
• Frictional Force
• Tension
• Tutorial Session 1: Chapter 5 – Force & Motion-I
• Solved Examples: 5.01, 5.01, 5.02, 5.03, 5.04, 5.06
• Exercise Problems: 2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 19, 23

Assignment 2: A2 (PDF) (Due Date: 14th October 2020) Solution: A2Sol (PDF)

Midterm-I Exam: MidI (PDF) + MidI – Solution (PDF) (20th October 2020)

• Lecture 8: Introduction to MATLAB Programming Language
• Quick Overview of MATLAB
• Advantages and Uses of Using it
• Notion of Syntax
• Basic Arithmetic Operations
• Lists and Matrix Operations
• Lecture 9: Introduction to Oscillations (Lecture Notes)
• Periodic Motion and Oscillations
• Some Particular Examples
• Kinematics of Oscillations
• Physical Intuition of Phase and Phase Constant
• Mathematical Formalism of Simple Harmonic Oscillation
• Revision of Midterm Syllabus
• Lecture 10: 1D and 2D Simple Harmonic Motion (Lecture Notes)
• Energy in Simple Harmonic Motion
• Linear (1D) SHM:
• Mass Attached to a Spring System
• Hook’s Law
• Angular (2D) SHM:
• Torsional Pendulum
• Simple Pendulum
• Angular Version of Hook’s Law
• Lecture 11: Circular Motion and Damped SHM (Lecture Notes)
• Circular Motion
• Equivalence of SHM and Projections of Circular Motion
• Graphical Intuition
• Damped Simple Harmonic Motion
• Natural and Driven Frequencies
• Resonance
• Tutorial Session 2: Chapter 15 – Oscillations
• Solved Examples: 15.01, 15.02, 15.04
• Exercise Problems: 2, 3, 4, 5, 6, 9, 11, 38, 42
• Lecture 12: Waves (Lecture Notes)
• Brief Introduction of Waves
• Types of Waves:
• Mechanical Waves
• Transverse Waves
• Longitudinal Waves
• Electromagnetic Waves
• Matter Waves
• Dynamics of Waves
• Speed of a Travelling Wave
• Principle of Superposition of Waves
• Interference
• Tutorial Session 3: Chapter 16 – Waves-I
• Solved Examples: 16.01, 16.02, 16.04
• Exercise Problems: 3, 4, 5, 7, 9, 10

Assignment 3: A3 (PDF) (Extended Due Date: 13th November 2020) Solution: A3Sol (PDF)

• Lecture 13: Introduction to Electrostatics (Lecture Notes)
• Introduce a Fundamental Quantity for an EM Theory
• Define Charge as a Physical Quantity
• Characteristics and Properties of a Charge
• Quantization/Discretization
• Conservation
• Coulomb’s Law and its Limitations
• Discussion on the Coulomb’s Constant and Permittivity of Free Space
• Principle of Superposition
• Lecture 14: Sample & Numerical Problems
• Solved Examples: 21.01, 21.02, 21.03, 21.04
• Exercise Problems: 3, 4, 5, 6, 13, 15, 26, 27, 28, 37, 41, 42
• Lecture 15: Electric Fields (Lecture Notes)
• Different Views of Fields
• Newton/Coulomb View: “Action at a Distance”
• Modern View: “Mediator of Force”
• QFT View: Particle are “Excitation of Energy”
• Electric Field and Its Detection
• Electric Field Lines
• Electric Field Due to a Point Charge
• Electric Field Due to a Dipole
• Discussion of Electric Dipole Moment
• Force on a Point Charge in an ‘External’ Electric Field
1. Measuring Elementary Charge
2. Ink-Jet Printing
3. Electric Breakdown and Sparking
• Lecture 16: Gauss’ Law (Lecture Notes)
• Why do we need Gauss’ Law?
• Electric Flux for Flat and Arbitrary Surfaces
• Mathematical Formalism of Gauss’ Law
• Discussion on Gaussian Surface
• Prove the Duality between Gauss’ and Coulomb’s Law

Assignment 4: A4 (PDF) (Due Date: 24th November 2020) Solution: A4 Sol (PDF Download)

• Tutorial Session 4: Chapter 22 – Electric Fields
• Solved Examples: 22.01, 22.02, 22.04
• Exercise Problems: 3, 5, 7, 39, 42, 44, 46, 47
• Lecture 17: Applications of Gauss’ Law (Lecture Notes)
• Symmetries in Physics
• Compute Electric Fields for Some Known Symmetries
• Cylindrical Symmetry
• Planar Symmetry
• Spherical Symmetry (Conducting and Non-Conducting)

Midterm-II Exam: MidII (PDF) + MidII – Solution (PDF) (24th November 2020)

• Lecture 18: Revised Course Planning + Midterm Discussion
• Devise a strategy for online lecture delivery
• Class Attendance
• Mode of Assignment Submission; Google Classroom
• Midterm II Discussion
• Lecture 19: Capacitance – I (Lecture Notes)
• Digression on electric potential energy and electric potential
• Another digression on calculating the potential difference from fields
• Define a capacitor
• How a capacitor becomes charged?
• Discussion on the capacitance of the capacitor
• Devise a recipe for calculating the capacitance for the special “geometries“.
• Lecture 20: Capacitance – II (Lecture Notes)
• Types of capacitors according to their symmetries
• Computing capacitances of these geometries
• Capacitors in parallel combinations
• Capacitors in series combinations
• Tutorial Session 5: Chapter 25 – Capacitance
• Lecture 21: Electric Current and Electric Density (Lecture Notes)
• Introduction to Magnetism
• Assumptions of Magnetism
• Electric Current and Conventional Current
• Current Density (along with its Physical Intuition)
• Drift Speed
• Lecture 22: Resistance and Resistivity (Lecture Notes)
• Ohm’s Law
• Discussion on Resistance
• Why we need the concept of Resistivity?
• Physical Intuition of Resistivity and Conductivity
• Calculating Resistance from the geometry of the material
• Variation of Resistivity with Temperature
• Self Reading: Discussion on Ohm’s Law
• Lecture 23: Chapter 26 Numerical Problems (Lecture Notes)
• Lecture 24: Magnetic Fields and Hall Effect (Lecture Notes)
• Why study magnetic fields?
• Ways of defining magnetic fields.
• Magnetic Force Direction of Magnetic Force; Right and Left Hand Rule
• Magnetic Field Lines
• Crossed Fields
• Hall Effect
• Lecture 25: Force Carrying Wire and Circulating Particle (Lecture Notes)
• Circulating Charged Particle in External Magnetic Field
• Magnetic Force on a Current-Carrying Wire
• Lecture 26: Chapter 28 Numerical Problems (Lecture Notes)
• Video Lecture by Bilal: Link
• Lecture 27: Biot-Savart Law and Gauss Law (Lecture Notes)
• Current carrying objects generate magnetic fields around them
• Calculate the magnetic field due to Current
• Force between two parallel currents
• Physical intuition of Ampere’s law
• Lecture 28 – Applications of Ampere’s Law (Lecture Notes)
• Magnetic field (outside and inside) a long current carrying straight wire
• Magnetic field of a solenoid
• Magnetic field of a toroid
• Tutorial Session 6: Chapter 29 – Magnetic Fields Due to Currents

Assignment 5: A5 (PDF) (Due Date: 3rd January 2021) Solution: A5 Sol (PDF Download)

Assignment 6: A6 (PDF) (Due Date: 3rd January 2021) Solution: A6 Sol (PDF Download)

Final Exam: Final – Solution (PDF) (8th February 2021)

Share: