Module: Electromagnetism and Its Applications
Module Overview
Electromagnetism is a fundamental force governing electric and magnetic fields. This
module explores the theoretical foundations, mathematical formulations, and real-
world applications of electromagnetism in circuits, energy generation, and modern
technologies.
Learning Objectives
By the end of this module, you should be able to:
1. Explain the relationship between electricity and magnetism.
2. Apply Maxwell’s equations to different physical scenarios.
3. Analyze the motion of charged particles in electric and magnetic fields.
4. Solve circuit problems using Kirchhoff’s laws and Ohm’s law.
5. Understand the principles of electromagnetic induction.
6. Explore practical applications such as transformers, electric motors, and
wireless power transfer.
Unit 1: Electric Fields and Charges
Coulomb’s Law: The force between point charges.
Electric Field (E-field): Definition, field lines, and superposition principle.
Electric Potential and Potential Energy: Relationship to electric field.
Gauss’s Law: Flux and field calculation for symmetric charge distributions.
Example Problem:
A conducting sphere of radius
𝑅
carries a charge
𝑄
. Find the electric field inside and outside
the sphere using Gauss’s Law.
Unit 2: Magnetic Fields and Forces
Lorentz Force: Motion of charges in magnetic fields.
Biot-Savart Law & Ampère’s Law: Magnetic fields due to currents.
Motion of Charged Particles: Helical motion in uniform magnetic fields.
