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Understand the principles of magnetism

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National Certificate in Paper & Pulp Manufacturing NQF Level 2 ... (include ATM cards, ID cards, car keys, hard disks, music cassettes, etc. ... – PowerPoint PPT presentation

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Title: Understand the principles of magnetism


1
Understand the principles of magnetism
2
Understand the principles of magnetism
Modules
Topics
Notional Hours
2 6 12 20
TC218 Magnetic fields
TC218 Electromagnetism
TC218 Practical electromagnetism
Total Notional Hours
3
US 10707 Understand the principles of
magnetism

TC218 Magnetic fields
Be able to draw the field lines for simple magnet
set-ups
Understand the directionality and field shapes of
magnets
Understand the applications of magnets in
everyday life, industry and process plant
applications
Understand the definitions, basic terminology
used and origins of magnetism
4
Topic Specification TC218 Magnetic fields
Learning Activities
Topic assessment criteria
Assignment Description
Use Multi media
WHAT
  • The assessor will observe and confirm that
    learners
  • Understand the spreading use of magnets at home,
    society and work
  • Are able to draw field lines for simple magnet
    set-ups

Learners will identify applications at home, work
and society in which magnets are used A group
discussion to consolidate magnetic applications
Self Study
Field visits
Collect Information
Media search
Interview experts
HOW
Attend lectures
Group Discussions
  1. List applications for magnets in various
    environments and identify the role played by the
    magnetic force
  2. Identify the applications where electro magnets
    are used from those with natural magnets
  3. In a group discussion, consolidate and group
    various applications identified (include ATM
    cards, ID cards, car keys, hard disks, music
    cassettes, etc.)
  4. Discuss the operating principle of applications
    such as ATM cards or stiffy discs and try to
  5. Draw field lines for a given magnet set-ups
  6. Complete multiple choice test

Educational games
Case studies
Analyse, plan and make decisions
Use checklists
Sketch
Job assignment
Make presentation
Complete documents
Execute, test and evaluate
Sketch
Complete a test/questionnaire
5
US 10707 Understand the principles of
magnetism

TC218 Electromagnetism
Be able to use Flemmings rule to predict the
relationship between the direction of a magnetic
field, current and force
Understand the forces acting on a conductor
transferring current through a magnetic field
Be able to use the right hand rule to determine
the direction of magnetic field lines induced by
an electric current
Understand the application of an electric current
to generate a magnetic field
6
Topic Specification TC218 Electromagnetism
Learning Activities
Topic assessment criteria
Assignment Description
Use Multi media
WHAT
  • The assessor will observe and confirm that
    learners
  • Understand that a magnetic field is generated by
    an electric current
  • Are able to use the right hand thumb rule
  • Understand that a force is generated when a
    current flows through a magnetic field
  • Are able to apply Flemmings left hand rule

Construct a simple experiment with a wire coil
and iron filings Construct a simple experiment to
demonstrate Flemmings left hand rule
Self Study
Field visits
Collect Information
Media search
Interview experts
HOW
Attend lectures
Group Discussions
  1. Write down the findings of the first experiment
    including a sketch with captions showing the
    direction of the current and the magnetic field
  2. Write down the findings of the second experiment
    including a sketch with captions showing the
    direction of the current, the magnetic field and
    the force on the conductor
  3. Compile information in a short report

Educational games
Case studies
Analyse, plan and make decisions
Use checklists
Develop recommendations
Job assignment
Make presentation
Complete documents
Execute, test and evaluate
Draft a report
Complete a test/questionnaire
7
US 10707 Understand the principles of
magnetism

TC218 Practical electromagnetism
Understand the design and the working of an
electric bell based on the forces resulting from
an electric coil in a magnetic field
Understand the working of a simple electric motor
based on the forces acting on a single coil in a
magnetic field
Be able to calculate the force acting upon a
conductor in a magnetic field due to the current
flowing through it
Understand methods used to calculate the forces
acting on a conductor transferring current
through a magnetic field
8
Topic Specification TC218 Practical
electromagnetism
Learning Activities
Topic assessment criteria
Assignment Description
Use Multi media
WHAT
  • The assessor will observe and confirm that
    learners
  • Are able to calculate forces emanating from a
    current flowing through a magnetic field
  • Understand simple magnetic appliance designs

A group or individual exercise of viewing video
material on magnetic forces Study basic material
related to calculating parameters in a magnetic
field
Self Study
Field visits
Collect Information
Media search
Interview experts
HOW
Attend lectures
Group Discussions
  1. Use a sketch of an appliance based on magnetic
    principles and explain the working of the
    appliance (door bell, electric motor)
  2. Study calculation examples
  3. Solve a range of given calculations
  4. Complete a test

Study examples
Case studies
Analyse, plan and make decisions
Use checklists
Do calculations
Job assignment
Make presentation
Complete documents
Execute, test and evaluate
Draft a report
Complete test
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