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# Year 12 Physics

## Module 6 | Electromagnetism

### Content 3: Electromagnetic induction

#### Lesson 1 | Magnetic flux through an area

• describe how magnetic flux can change, with reference to the relationship $\Phi = BA$ (ACSPH083, ACSPH107, ACSPH109)

#### Lesson 2 | Electromagnetic induction

• analyse qualitatively and quantitatively, with reference to energy transfers and transformations, examples of Faraday’s law and Lenz’s law ($\varepsilon = -N\frac{\Delta \Phi }{\Delta t}$), including but not limited to: (ACSPH081, ACSPH110)
– the generation of an electromotive force (emf) and evidence for Lenz’s law produced by the relative movement between a magnet, straight conductors, metal plates and solenoids
– the generation of an emf produced by the relative movement or changes in current in one solenoid in the vicinity of another solenoid

#### Lesson 3 | Transformers

• analyse quantitatively the operation of ideal transformers through the application of: (ACSPH110)
$\frac{V_{P}}{V_{s}} = \frac{N_{P}}{N_{s}}$
– VpIp = VsIs

#### Lesson 4 | Transformer efficiency and applications

• evaluate qualitatively the limitations of the ideal transformer model and the strategies used to improve transformer efficiency, including but not limited to:
– resistive heat production and eddy currents

• analyse applications of step-up and step-down transformers, including but not limited to:
– the distribution of energy using high-voltage transmission lines

• ### 53 Lessons

• ### 74 Practice questions

• ### 53 Hours of video

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