DC Circuits Week 2

Topics 1, 2, 3, 8 scheduled for Lesson 2 (from assessment guidelines, subject to change)

T5 Effects of electrical current encompassing: (Pink was in lesson 1)

physiological effects of current and the fundamental principles (listed in AS/NZS 3000) for protection against the this effect
basic principles by which electric current can result in the production of heat; the production of magnetic fields; a chemical reaction
typical uses of the effects of current
mechanisms by which metals corrode
fundamental principles (listed in AS/NZS3000) for protection against the damaging effects of current

New and continuing material

T1 Basic electrical concepts encompassing: (red was in lesson 1 homework videos)

electrotechnology industry
static and current electricity
production of electricity by renewable and non renewable energy sources
transportation of electricity from the source to the load via the transmission and distribution systems
utilisation of electricity by the various loads
basic calculations involving quantity of electricity, velocity and speed with relationship to the generation and transportation of electricity.

T2 Basic electrical circuit encompassing: (pink was in lesson 1)

symbols used to represent an electrical energy source, a load, a switch and a circuit protection device in a circuit diagram
purpose of each component in the circuit
effects of an open-circuit, a closed-circuit and a short-circuit
multiple and sub-multiple units

T3 Ohm’s Law encompassing: (pink was in lesson 1)

basic d.c. single path circuit.
voltage and currents levels in a basic d.c. single path circuit.
effects of an open-circuit, a closed-circuit and a short-circuit on a basic d.c. single path relationship between voltage and current from measured values in a simple circuit
determining voltage, current and resistance in a circuit given any two of these quantities
graphical relationships of voltage, current and resistance
relationship between voltage, current and resistance

T8 Series circuits encompassing:

circuit diagram of a single-source d.c. ‘series’ circuit.
Identification of the major components of a ‘series’ circuit: power supply; loads; connecting leads and switch
applications where ‘series’ circuits are used in the Electro technology industry.
characteristics of a ‘series’ circuit – connection of loads, current path, voltage drops, power dissipation and affects of an open circuit in a ‘series’ circuit.
the voltage, current, resistances or power dissipated from measured or given values of any two of these quantities
relationship between voltage drops and resistance in a simple voltage divider network.
setting up and connecting a single-source series dc circuit Simulation only in week 1
measurement of resistance, voltage and current values in a single source series circuit
effect of an open-circuit on a series connected circuit

DC week 2 2 res meter

This circuit and these measurements (physically done as opposed to theory) and any theory associated with this circuit to determine voltages and currents is essential to you study and this preliminary circuit is one to keep coming back to so that you can focus on what is required by week 3 of your course.

Lesson two DC circuits plan for teaching text