Module 6: Electromagnetism

We recommend students learning Module 6: Electromagnetism in the order we have prescribed below.

It is beneficial for students to grasp the concept of DC Motors (section 4) immediately after learning the Motor Effect and Electromagnetic Induction, rather than at the end of the module as outlined in the NSW HSC syllabus.

Charged Particles, Conductors and Magnetic Fields

Inquiry question: What happens to stationary and moving charged particles when they interact with an electric or magnetic field?

• Charged Particles in Electric Fields

• Work Done on Charges in Electric Fields

• Charged Particles in Magnetic Fields

• Comparing Charged Particles in Magnetic Fields to Electric Fields

The Motor Effect

Inquiry question: Under what circumstances is a force produced on a current-carrying conductor in a magnetic field?

• The Motor Effect

• Force Between a Pair of Straight Conductors

Electromagnetic Induction

Inquiry question: How are electric and magnetic fields related?

• Magnetic Flux and Flux Density

• Faraday's Law of Induction

• Lenz's Law 

• Transformer Equations

• Ideal Transformer Limitations and Improving Efficiency

• Applications of Step-up and Step-down Transformers

Applications of the Motor Effect

Inquiry question: How has knowledge about the Motor Effect been applied to technological advances?

• Operation of a Simple DC Motor

• Parallel vs Radial Magnets

• Back EMF in a Simple DC Motor

• Operation of Simple DC and AC Generators

• AC Induction Motor

• Lenz's Law in DC Motors and Magnetic Braking