Course Outline
Course Overview
Electric and magnetic fields are invisible forces that influence everything from the behavior of atoms to the operation of power stations, electric motors, and particle accelerators. In this course, students will investigate the nature of electric and magnetic interactions, develop mathematical models to describe field behavior, and explore how these principles are applied in modern technology. Through conceptual understanding and quantitative problem-solving, students will discover how electricity and magnetism are deeply connected and how they shape the world around us.
Unit 1: Basics of Electric Fields
Explore how electric charges create fields and exert forces on one another.
1.1 Electric Charge
- Positive and negative charge
- Conservation of charge
- Charging by friction, conduction, and induction
1.2 Coulomb's Law
- Electric force between charges
- Inverse-square relationship
- Calculating electrostatic forces
1.3 Electric Field Strength
- Electric fields as force fields
- Force per unit charge
- Electric field calculations
1.4 Field Lines
- Visualizing electric fields
- Field line diagrams
- Uniform and non-uniform fields
1.5 Superposition of Fields
- Combining electric fields
- Vector addition of fields
- Field null points and equilibrium
Unit 2: Electric Potential and Energy
Investigate how electric fields store and transfer energy.
2.1 Electric Potential
- Electric potential as energy per unit charge
- Reference points
- Potential around point charges
2.2 Potential Difference
- Voltage and energy transfer
- Work done by electric fields
- Voltage calculations
2.3 Equipotential Lines
- Equipotential surfaces
- Relationship to field lines
- Mapping electric fields
2.4 Electric Potential Energy
- Energy stored in electric fields
- Potential energy changes
- Motion of charges in fields
2.5 Capacitors and Energy Storage
- Capacitance
- Charging and discharging
- Applications in electronics
Unit 3: Basics of Magnetic Fields
Develop an understanding of magnetic fields and magnetic materials.
3.1 Permanent Magnets
- Magnetic poles
- Attraction and repulsion
- Magnetic domains
3.2 Magnetic Field Lines
- Magnetic field patterns
- Visualizing magnetic fields
- Comparing electric and magnetic fields
3.3 Magnetic Flux Density
- Measuring magnetic field strength
- Tesla and magnetic field units
- Uniform magnetic fields
3.4 Earth's Magnetic Field
- Earth's magnetosphere
- Compass navigation
- Geomagnetic phenomena
3.5 Magnetic Materials
- Ferromagnetic materials
- Paramagnetism and diamagnetism
- Applications of magnetic materials
Unit 4: Magnetic Forces and Fields in Systems
Examine how magnetic fields interact with moving charges and currents.
4.1 Force on Moving Charges
- Magnetic force on charged particles
- Direction of force
- Right-hand rule
4.2 Force on Current-Carrying Wires
- Magnetic forces on conductors
- Fleming's Left-Hand Rule
- Applications in devices
4.3 Circular Motion in Magnetic Fields
- Charged particle trajectories
- Radius of circular motion
- Magnetic confinement
4.4 Motors and Loudspeakers
- Electromechanical energy conversion
- Motor principles
- Speaker operation
4.5 Charged Particle Motion
- Combined electric and magnetic effects
- Velocity selection
- Particle beam control
Unit 5: Electromagnetism
Discover how electricity and magnetism are interconnected.
5.1 Magnetic Fields from Currents
- Oersted's discovery
- Field patterns around wires
- Right-hand grip rule
5.2 Solenoids and Electromagnets
- Magnetic fields in coils
- Electromagnet design
- Factors affecting strength
5.3 Electromagnetic Force
- Interaction of currents and fields
- Applications in technology
- Electromagnetic systems
5.4 Hall Effect and Applications
- Hall voltage
- Measuring magnetic fields
- Sensors and industrial uses
5.5 Mass Spectrometers and Particle Physics
- Separating charged particles
- Measuring mass-to-charge ratio
- Applications in modern physics
Course Summary
By the end of this course, students will understand how electric and magnetic fields are created, how they interact with charges and currents, and how these interactions explain many natural phenomena and technological applications.
Students will learn to:
- Describe the behavior of electric charges and electric fields.
- Apply Coulomb's Law and electric field equations to solve problems.
- Analyze electric potential, voltage, and energy relationships.
- Interpret electric field and magnetic field diagrams.
- Explain magnetic field formation and magnetic material behavior.
- Calculate magnetic forces on moving charges and current-carrying conductors.
- Analyze circular motion in magnetic fields.
- Explain the operation of motors, loudspeakers, and electromagnets.
- Apply the Hall Effect to measure magnetic fields and charge motion.
- Explain how mass spectrometers use electric and magnetic fields to study matter.
- Use vector reasoning and mathematical models to solve electromagnetic problems.
This course serves as a bridge between classical mechanics and modern physics, providing the foundation for future studies in electromagnetism, electronics, engineering, materials science, telecommunications, and particle physics. Through the study of electric and magnetic fields, students gain insight into some of the most powerful and far-reaching ideas in all of science.