Magnetism and Induction

Syllabus, Handouts and PowerPoints for this unit: Calendar | Handouts | Lectures

Labs for this unit: Magnet Design Lab .:. Magnaprobe Lab .:. Specific Heat of Water .:. Index of Refraction

Labs for this unit: Faraday's Law .:. Faraday's Law ILD

Homework Problems: Ch 20: 3, 9, 16 Ch 21: 5, 13, 15

Group Quizzes: 20ABCD .:. 21ABCEF

Ch 20 Assessments: 20.1-Right Hand Rules .:. 20.2-Forces on Wires and Particles .:. 20.3-Ampere's Law

Ch 21 Assessments: 21.1-Lenz's Law .:. 21.2-Faraday's Law

Study for the: IB Magnetism Test

Chapter 20: Magnetism

20A. Basic Magnetism, and Right Hand Rules for magnetic fields

1.Right Hand Rule for the force a magnetic field exerts on a current carrying wire:

2. Right hand rule for the magnetic field around a wire:

3. Right Hand Rule for finding the North pole of a current carrying wire loop:



4. Solving "Map" problems (NESW):

20B. Calculating the magnitude of the force on current carrying wires

Noteguide20B-ForceOnWires.docx

Calculating Magnetic Force on a Wire:

20C. Solve problems with moving particles in a magnetic field.

(Be sure to watch all 3 parts)

Noteguide20C-ParticlesInAMagneticField.docx

Part 1: Calculating the force on a moving charged particle in a magnetic field:


Part 2: Relating magnetic force to centripetal force, and doing calculations with radius of path:


Particle accelerators that use magnetic fields to make charged particles go in circles:


Why the Northern lights are Northern (or Southern):

20D. Solve problems with crossed fields


Noteguide20D-CrossedFields.docx

Part 1: The directions in Crossed Fields problems.


Noteguide20D-CrossedFields.docx

Part 2: Solving Problems with crossed E and B fields:


Mass Spectrometers:

20E. Understand the Hall effect.

20F. Understand how magnetization works with domains and hysteresis

Noteguide20F-HysteresisAndMagnetization.docx

How those freaking magnets work:

20G. Apply magnetism to understand how galvanometers, speakers and motors work.

Noteguide20G-MotorsGalvanometersSpeakers.docx

Motors, Galvanometers, and Speakers:

20H. Apply Ampere's law to a long straight wire and solenoids:

Noteguide20H-AmperesLaw.docx

Ampere's Law for B field around a wire:

Ampere's Ghost (Scary - but true)


Solving for the magnetic force between two current-carrying wires:


Applying Ampere's Law to Solenoids:

20I. Define the Ampere in terms of meters and Newtons

Noteguide20I-TheAmpere.docx

The definition of an Ampere: (memorize this)

20K. Understand the basic magnetic field lines around long solenoids, flat solenoids, and straight wires.

Noteguide20K-BasicFieldPatterns.docx

Common B field Patterns:

Chapter 21: Induction

21A. Predicting the direction of current induced by changing magnetic flux using Lenz's Law

Noteguide21A-LenzsLaw.docx

Direction of induced currents:

21B. Use Faraday's Law to calculate EMFs and Currents in loops or solenoids.

Noteguide21B-FaradaysLaw.docx

Faraday's Law for loops:

21C. Use Faraday's Law to calculate EMFs on moving conductors.

Noteguide21C-MovingConductors.docx

Part 1 - EMF in Moving Conductors:


Part 2 - Direction of EMF in Moving Conductors

21D. Use Faraday's Law to calculate EMF generated by an alternator.

21E. Use Faraday's Law to calculate voltages and currents in transformers.

Noteguide21E-Transformers.docx

Solving for Voltage, Current and Power in Transformers:

21F. Calculate the power loss on transmission lines and show why we transmit AC power at high voltages.

21G. Have a basic understanding about Maxwell's Equations

Stuff at the bottom