91526 Electrical Systems
What you'll learn
This course covers the things you'll need to know and be able to do for achievement standard 91526.
In it you'll find out about:
- Internal resistance
- Simple application of Kirchoff’s laws
- Parallel plate capacitors, capacitance; dielectrics; series and parallel capacitors; charge-time, voltage-time and current-time graphs for a capacitor; time constant; energy stored in a capacitor
- Magnetic flux, magnetic flux density, Faraday’s law, Lenz’s law, the inductor; voltage-time and current-time graphs for an inductor, time constant, self-inductance, energy stored in an inductor, the transformer
- The comparison of the energy dissipation in a resistor carrying direct current and alternating current; peak and \(rms\) voltage and current
- Phasor diagrams; reactance and impedance and their frequency dependence in a series circuit, voltage and current and their phase relationship in LR and CR circuits, resonance in LCR circuits.
How you'll learn
There are a variety of ways you can learn and interact with the materials in this course.
Self-paced learning – the material is set up so you can learn at your own pace. Although there are 'suggested' times for each page, they're just a guideline - plan your learning to suit you.
Practice activities – throughout this course there are short activities. These activities are for you, not for someone to mark them. These activities give you a great chance to practise what you've learned and compare your answer to the model feedback. Look at the feedback carefully to see if you have missed out any aspects from your answer.
Submitting photos – sometimes people find it easier to scribble down a diagram or show their working with pen and paper. No problem! You can still store all your working and diagrams with the activity. That way you'll be able to refer back to your answers when you're revising. Simply take a photo of your work and upload it with the relevant activity.