HSC Physics Study Guide Part 2 (Motors and Generators Module)

Posted on February 22, 2017 by DJ Kim

Year 12 Physics students find the HSC Physics Motors and Generators module conceptually challenging. As such, students struggle to provide scientific responses that are logical and sequential as required to obtain full marks in exam questions. In Part 2 of our HSC Physics study guide, our science team explains how to structure your answers using flowcharts to simplify complex processes.

Some of the flowcharts from the Matrix Year 12 Physics Theory Book are provided below to help you write better scientific responses. If you missed it, also read: HSC Physics Study Guide Part 1 (Space Module).

 

1. Magnetic Field

The flowchart below outlines the magnetic field phenomena.


 

2. Motor Effect in DC Motors

The motor effect refers to a physical phenomenon where a current carrying conductor in an external magnetic field experiences a magnetic force due to the interaction between the magnetic fields.

The flowchart below outlines the process of torque production in a simple brushed DC motor.

Motor Effect in DC Motors Flowchart

 

 

3. Operation of a Galvanometer

A galvanometer is an instrument used to measure the size and direction of electric currents using the principle of the motor effect.

The flowchart outlines how a galvanometer operates.


Operation of galvanometer flowchart

 

4. Operation of a Loudspeaker

The flowchart outlines how a loudspeaker operates.

Operation of loudspeaker flowchart

 

5. Electromagnetic Induction

The flowchart outlines the process in which EMF is induced in a moving conductor.

Electromagnetic Induction flowchart

 

6. Faraday and Lenz’s Law

Faraday’s Law can be stated as follows:

An EMF is induced whenever a circuit experiences a change of magnetic flux and the EMF induced in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.

The flowchart outlines the process in which EMF is induced in a moving conductor.

 

Faradays Law Flowchart

 

7. Electromagnetic Induction in Generators

The flowchart outlines the process in which a generator converts mechanical energy into electrical energy using the principle of electromagnetic induction.

electromagnetic induction in generators

 

 

Read More:

 

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