Document ID: chunk:federal_register_of_legislation:F2025C00150:reg:1:p4
Version: federal_register_of_legislation:F2025C00150
Segment Type: reg
Provision Reference: reg 1 (pt 4/29)
Character Range: 101832–108036

the category
                                                                                                                                                                                                      A     B1                                   B2

3.1   Electron theory                                                                                                                                                                                 1     1                                    1
Structure and distribution of electrical charges within atoms, molecules, ions, compounds;
Molecular structure of conductors, semiconductors and insulators.
3.2   Static electricity and conduction                                                                                                                                                               1     2                                    2
Static electricity and distribution of electrostatic charges;
Electrostatic laws of attraction and repulsion;
Units of charge, Coulomb's Law;
Conduction of electricity in solids, liquids, gases and vacuum.
3.3   Electrical terminology                                                                                                                                                                          1     2                                    2
The following terms, their units and factors affecting them: potential difference, electromotive force, voltage, current, resistance, conductance, charge, conventional current flow, electron flow.
3.4   Generation of electricity                                                                                                                                                                       1     1                                    1
Production of electricity by the following methods: light, heat, friction, pressure, chemical action, magnetism and motion.
3.5   DC sources of electricity                                                                                                                                                                       1     2                                    2
Construction and basic chemical action of: primary cells, secondary cells, lead acid cells, nickel cadmium cells, other Alkaline cells;
Cells connected in series and parallel;
Internal resistance and its effect on a battery;
Construction, materials and operation of thermocouples;
Operation of photo-cells.
3.6   DC circuits                                                                                                                                                                                     —     2                                    2
Ohms Law, Kirchoff's Voltage and Current Laws;
Calculations using the above laws to find resistance, voltage and current;
Significance of the internal resistance of a supply.
3.7   Resistance and resistor
(a)                                                                                                                                                                                                   —     2                                    2
    Resistance and affecting factors;
    Specific resistance;
    Resistor colour code, values and tolerances, preferred values, wattage ratings;
    Resistors in series and parallel;
    Calculation of total resistance using series parallel and series parallel combinations;
    Operation and use of potentiometers and rheostats;
    Operation of Wheatstone Bridge;
(b)                                                                                                                                                                                                   —     1                                    1
    Positive and negative temperature coefficient conductance;
    Fixed resistors, stability, tolerance and limitations, methods of construction;
    Variable resistors, thermistors, voltage dependent resistors;
    Construction of potentiometers and rheostats;
    Construction of Wheatstone Bridge.
3.8   Power                                                                                                                                                                                           —     2                                    2
Power, work and energy (kinetic and potential);
Dissipation of power by a resistor;
Power formula;
Calculations involving power, work and energy.
3.9   Capacitance and capacitor                                                                                                                                                                       —     2                                    2
Operation and function of a capacitor;
Factors affecting capacitance area of plates, distance between plates, number of plates, dielectric and dielectric constant, working voltage, voltage rating;
Capacitor types, construction and function;
Capacitor colour coding;
Calculations of capacitance and voltage in series and parallel circuits;
Exponential charge and discharge of a capacitor, time constants;
Testing of capacitors.
3.10   Magnetism
(a)                                                                                                                                                                                                   —     2                                    2
    Theory of magnetism;
    Properties of a magnet;
    Action of a magnet suspended in the Earth's magnetic field;
    Magnetisation and demagnetisation;
    Magnetic shielding;
    Various types of magnetic material;
    Electromagnets construction and principles of operation;
    Hand clasp rules to determine: magnetic field around current carrying conductor.
(b)                                                                                                                                                                                                   —     2                                    2
    Magneto-motive force, field strength, magnetic flux density, permeability, hysteresis loop, retentivity, coercive force reluctance, saturation point, eddy currents;
    Precautions for care and storage of