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Physics HL

Chapter 18: Electric and Magnetic Fields

Build one coherent electromagnetic model from charge conservation and Coulomb force to magnetic-field direction rules, Lorentz forces, electric potential, and equipotential-field geometry.

Estimated chapter time: 210 minutes

Chapter Topics

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  1. 1How to Read This Electric and Magnetic Fields Chapter
    1. 1.1Why This Chapter Is a Turning Point
    2. 1.2Learning Targets
    3. 1.3How to Work This Chapter Efficiently
  2. 218.1 Electric Charge, Coulomb Force, and Electric Field
    1. 2.1Charge Properties and How Bodies Become Charged
    2. 2.2Coulomb's Law and Superposition
    3. 2.3Electric Field as Force Per Unit Positive Test Charge
  3. 318.2 Magnetic Fields from Magnets and Currents
    1. 3.1What Produces Magnetic Fields
    2. 3.2Field Patterns for Wire, Loop, and Solenoid
    3. 3.3Right-Hand Grip Rule as a Direction Engine
  4. 418.2 Magnetic Forces on Moving Charges and Currents
    1. 4.1Lorentz Force on a Moving Charge
    2. 4.2Force on a Current-Carrying Wire
    3. 4.3Parallel Currents: Attraction and Repulsion
  5. 518.3 Electric Potential, Potential Energy, and Equipotential Geometry
    1. 5.1Electric Potential and Potential Energy Definitions
    2. 5.2Potential Differences and Work
    3. 5.3Field-Potential Gradient Link
    4. 5.4Equipotential Surfaces and Field Lines
  6. 618.4 Crossed Electric and Magnetic Fields (Bridge to Motion-in-Fields)
    1. 6.1Competing Forces in Crossed Fields
    2. 6.2Velocity Selector Condition
    3. 6.3Operational Beam-Control Interpretation
  7. 7Chapter 18 Wrap-Up
    1. 7.1Fast Workflow for Chapter 18 Problems

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How to Read This Electric and Magnetic Fields Chapter