Unit 4

Optics, Electricity, and Magnetism

Study geometric optics with mirrors and lenses, wave optics with diffraction and interference, static electricity, electric circuits, and magnetism.

Unit 4 · 22 pages

Chapters

00Cover

Cover

Unit overview, learning objectives, and vocabulary for Unit 4.

Reflection and Mirrors

Apply the law of reflection to plane and curved mirrors; use the mirror equation to locate images and determine magnification.

Refraction and Snell's Law

Apply Snell's law to calculate angles of refraction; analyze total internal reflection and its applications.

Lenses and Image Formation

Use the thin-lens equation to locate images formed by converging and diverging lenses; calculate magnification.

Diffraction

Analyze single-slit diffraction patterns and explain how wavelength and slit width affect the diffraction pattern.

Interference and Young's Double Slit

Apply Young's double-slit experiment to calculate fringe spacing; distinguish constructive from destructive interference.

Electric Charge and Coulomb's Law

Describe electric charge, apply Coulomb's law to calculate electrostatic force, and distinguish conductors from insulators.

Electric Fields

Define electric field as force per unit charge; draw field lines and calculate field strength for point charges and uniform fields.

Electric Potential and Voltage

Distinguish electric potential energy from electric potential; calculate voltage and relate it to work done on charges.

Current, Resistance, and Ohm's Law

Define current and resistance; apply Ohm's law (V = IR) and analyze factors affecting resistance in conductors.

Series and Parallel Circuits

Apply Kirchhoff's voltage and current laws to analyze series and parallel DC circuits; calculate equivalent resistance.

Power and Energy in Circuits

Calculate electrical power (P = IV = I²R = V²/R) and energy dissipated in resistors over time.

Magnetic Fields and Forces

Describe magnetic fields, apply the right-hand rule, and calculate the force on a moving charge and current-carrying wire.

Electromagnetism

Analyze the magnetic field produced by current-carrying conductors; apply Ampere's law to solenoids and toroids.

Electromagnetic Induction

Apply Faraday's law to calculate induced EMF from changing magnetic flux; analyze generators and transformers.

Faraday's Law and Lenz's Law

Apply Faraday's and Lenz's laws to predict the direction and magnitude of induced currents in changing magnetic fields.

Unit Review

Consolidate your understanding of optics, wave interference, electrostatics, electric circuits, and magnetism with mixed problems and a student self-check.

Reflection, Refraction, and Lenses

Apply the law of reflection to plane and curved mirrors, Snell's law to refraction, and the thin-lens equation to analyze converging and diverging lenses.

Wave Optics and Interference

Analyze double-slit interference patterns, single-slit diffraction, and thin-film interference using the wave model of light.

Electrostatics

Analyze electric charge, apply Coulomb's law, describe electric fields and potential, and distinguish conductors from insulators.

Electric Circuits

Apply Ohm's law and Kirchhoff's rules to analyze series, parallel, and combination DC circuits; calculate current, voltage, resistance, and power.

Magnetism and Electromagnetic Induction

Analyze magnetic fields and forces, apply the right-hand rule, and use Faraday's and Lenz's laws to analyze electromagnetic induction and generators.

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